Re-add "-Xclang -no-opaque-pointers"

Reverts https://crrev.com/c/3646948 and a follow-up patch https://crrev.com/c/3650437.

Removing this flag may be causing miscompiles. Speculatively revert.

Bug: 1322823
Change-Id: I1e5f210c76dfaa2b842bcc7d3205add797a330d7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3648575
Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Arthur Eubanks <aeubanks@google.com>
Cr-Commit-Position: refs/heads/main@{#1003869}
NOKEYCHECK=True
GitOrigin-RevId: 2ab3924df9894cfba339ce1765eab3d3da22994f
diff --git a/symbols_arm64_rel.def b/symbols_arm64_rel.def
index f355317..8fd13d5 100644
--- a/symbols_arm64_rel.def
+++ b/symbols_arm64_rel.def
@@ -121,6 +121,7 @@
     ??0ByAnyChar@absl@@QEAA@Vstring_view@1@@Z
     ??0ByLength@absl@@QEAA@_J@Z
     ??0ByString@absl@@QEAA@Vstring_view@1@@Z
+    ??0ChunkIterator@Cord@absl@@AEAA@PEAUCordRep@cord_internal@2@@Z
     ??0ChunkIterator@Cord@absl@@AEAA@PEBV12@@Z
     ??0Condition@absl@@AEAA@XZ
     ??0Condition@absl@@QEAA@P6A_NPEAX@Z0@Z
diff --git a/symbols_x64_rel.def b/symbols_x64_rel.def
index f9e0966..517fcc6 100644
--- a/symbols_x64_rel.def
+++ b/symbols_x64_rel.def
@@ -76,6 +76,8 @@
     ??$SetEdge@$0A@@CordRepBtree@cord_internal@absl@@QEAA?AUOpResult@012@_NPEAUCordRep@12@_K@Z
     ??$StrReplaceAll@V?$initializer_list@U?$pair@Vstring_view@absl@@V12@@__1@std@@@std@@@absl@@YA?AV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@Vstring_view@0@AEBV?$initializer_list@U?$pair@Vstring_view@absl@@V12@@__1@std@@@3@@Z
     ??$StrReplaceAll@V?$initializer_list@U?$pair@Vstring_view@absl@@V12@@__1@std@@@std@@@absl@@YAHAEBV?$initializer_list@U?$pair@Vstring_view@absl@@V12@@__1@std@@@std@@PEAV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@2@@Z
+    ??$ToChronoDuration@V?$duration@JV?$ratio@$0DM@$00@__1@std@@@chrono@__1@std@@@time_internal@absl@@YA?AV?$duration@JV?$ratio@$0DM@$00@__1@std@@@chrono@__1@std@@VDuration@1@@Z
+    ??$ToChronoDuration@V?$duration@JV?$ratio@$0OBA@$00@__1@std@@@chrono@__1@std@@@time_internal@absl@@YA?AV?$duration@JV?$ratio@$0OBA@$00@__1@std@@@chrono@__1@std@@VDuration@1@@Z
     ??$__construct_node_hash@AEBUpiecewise_construct_t@__1@std@@V?$tuple@AEBV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@V?$tuple@$$V@23@@?$__hash_table@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@V?$__unordered_map_hasher@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@23@U?$hash@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@U?$equal_to@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@$00@23@V?$__unordered_map_equal@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@23@U?$equal_to@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@U?$hash@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@$00@23@V?$allocator@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@23@@__1@std@@AEAA?AV?$unique_ptr@U?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@V?$__hash_node_destructor@V?$allocator@U?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@23@@12@_KAEBUpiecewise_construct_t@12@$$QEAV?$tuple@AEBV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@12@$$QEAV?$tuple@$$V@12@@Z
     ??$__emplace_back_slow_path@AEAVstring_view@absl@@AEBV12@AEA_K@?$vector@UViableSubstitution@strings_internal@absl@@V?$allocator@UViableSubstitution@strings_internal@absl@@@__1@std@@@__1@std@@AEAAXAEAVstring_view@absl@@AEBV34@AEA_K@Z
     ??$__emplace_unique_key_args@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@AEBUpiecewise_construct_t@23@V?$tuple@AEBV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@V?$tuple@$$V@23@@?$__hash_table@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@V?$__unordered_map_hasher@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@23@U?$hash@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@U?$equal_to@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@$00@23@V?$__unordered_map_equal@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@23@U?$equal_to@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@U?$hash@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@$00@23@V?$allocator@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@23@@__1@std@@QEAA?AU?$pair@V?$__hash_iterator@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@_N@12@AEBV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@12@AEBUpiecewise_construct_t@12@$$QEAV?$tuple@AEBV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@12@$$QEAV?$tuple@$$V@12@@Z
diff --git a/symbols_x64_rel_asan.def b/symbols_x64_rel_asan.def
index 344d791..094ff26 100644
--- a/symbols_x64_rel_asan.def
+++ b/symbols_x64_rel_asan.def
@@ -75,6 +75,8 @@
     ??$SetEdge@$0A@@CordRepBtree@cord_internal@absl@@QEAA?AUOpResult@012@_NPEAUCordRep@12@_K@Z
     ??$StrReplaceAll@V?$initializer_list@U?$pair@Vstring_view@absl@@V12@@__1@std@@@std@@@absl@@YA?AV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@Vstring_view@0@AEBV?$initializer_list@U?$pair@Vstring_view@absl@@V12@@__1@std@@@3@@Z
     ??$StrReplaceAll@V?$initializer_list@U?$pair@Vstring_view@absl@@V12@@__1@std@@@std@@@absl@@YAHAEBV?$initializer_list@U?$pair@Vstring_view@absl@@V12@@__1@std@@@std@@PEAV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@2@@Z
+    ??$ToChronoDuration@V?$duration@JV?$ratio@$0DM@$00@__1@std@@@chrono@__1@std@@@time_internal@absl@@YA?AV?$duration@JV?$ratio@$0DM@$00@__1@std@@@chrono@__1@std@@VDuration@1@@Z
+    ??$ToChronoDuration@V?$duration@JV?$ratio@$0OBA@$00@__1@std@@@chrono@__1@std@@@time_internal@absl@@YA?AV?$duration@JV?$ratio@$0OBA@$00@__1@std@@@chrono@__1@std@@VDuration@1@@Z
     ??$__construct_at_end@PEBVFormatArgImpl@str_format_internal@absl@@@?$vector@VFormatArgImpl@str_format_internal@absl@@V?$allocator@VFormatArgImpl@str_format_internal@absl@@@__1@std@@@__1@std@@AEAAXPEBVFormatArgImpl@str_format_internal@absl@@0_K@Z
     ??$__construct_node_hash@AEBUpiecewise_construct_t@__1@std@@V?$tuple@AEBV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@V?$tuple@$$V@23@@?$__hash_table@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@V?$__unordered_map_hasher@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@23@U?$hash@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@U?$equal_to@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@$00@23@V?$__unordered_map_equal@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@23@U?$equal_to@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@U?$hash@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@$00@23@V?$allocator@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@23@@__1@std@@AEAA?AV?$unique_ptr@U?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@V?$__hash_node_destructor@V?$allocator@U?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@23@@12@_KAEBUpiecewise_construct_t@12@$$QEAV?$tuple@AEBV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@12@$$QEAV?$tuple@$$V@12@@Z
     ??$__emplace_unique_key_args@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@AEBUpiecewise_construct_t@23@V?$tuple@AEBV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@V?$tuple@$$V@23@@?$__hash_table@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@V?$__unordered_map_hasher@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@23@U?$hash@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@U?$equal_to@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@$00@23@V?$__unordered_map_equal@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@23@U?$equal_to@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@U?$hash@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@23@$00@23@V?$allocator@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@23@@__1@std@@QEAA?AU?$pair@V?$__hash_iterator@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@_N@12@AEBV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@12@AEBUpiecewise_construct_t@12@$$QEAV?$tuple@AEBV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@12@$$QEAV?$tuple@$$V@12@@Z
@@ -404,6 +406,7 @@
     ?Find@ByChar@absl@@QEBA?AVstring_view@2@V32@_K@Z
     ?Find@ByLength@absl@@QEBA?AVstring_view@2@V32@_K@Z
     ?Find@ByString@absl@@QEBA?AVstring_view@2@V32@_K@Z
+    ?FindFlatStartPiece@InlineRep@Cord@absl@@QEBA?AVstring_view@3@XZ
     ?FindPath@GraphCycles@synchronization_internal@absl@@QEBAHUGraphId@23@0HQEAU423@@Z
     ?FindSlow@CordRepRing@cord_internal@absl@@AEBA?AUPosition@123@I_K@Z
     ?FindTailSlow@CordRepRing@cord_internal@absl@@AEBA?AUPosition@123@I_K@Z