Roll Dart VM. (#6472)

packages/flutter_tools/lib/src/commands/build_aot.dart

diff --git a/packages/flutter_tools/lib/src/commands/build_aot.dart b/packages/flutter_tools/lib/src/commands/build_aot.dart
index 453ac29..9985fba 100644
--- a/packages/flutter_tools/lib/src/commands/build_aot.dart
+++ b/packages/flutter_tools/lib/src/commands/build_aot.dart
@@ -270,37 +270,39 @@
     printStatus('Building app.dylib...');
 
     // These names are known to from the engine.
-    const String kDartVmIsolateSnapshotBuffer = 'kDartVmIsolateSnapshotBuffer';
-    const String kDartIsolateSnapshotBuffer = 'kDartIsolateSnapshotBuffer';
+    String kVmIsolateSnapshot = 'kVmIsolateSnapshot';
+    String kIsolateSnapshot = 'kIsolateSnapshot';
 
-    runCheckedSync(<String>['mv', vmIsolateSnapshot, path.join(outputDir.path, kDartVmIsolateSnapshotBuffer)]);
-    runCheckedSync(<String>['mv', isolateSnapshot, path.join(outputDir.path, kDartIsolateSnapshotBuffer)]);
-
-    String kDartVmIsolateSnapshotBufferC = path.join(outputDir.path, '$kDartVmIsolateSnapshotBuffer.c');
-    String kDartIsolateSnapshotBufferC = path.join(outputDir.path, '$kDartIsolateSnapshotBuffer.c');
-
-    runCheckedSync(<String>[
-      'xxd', '--include', kDartVmIsolateSnapshotBuffer, path.basename(kDartVmIsolateSnapshotBufferC)
-    ], workingDirectory: outputDir.path);
-    runCheckedSync(<String>[
-      'xxd', '--include', kDartIsolateSnapshotBuffer, path.basename(kDartIsolateSnapshotBufferC)
-    ], workingDirectory: outputDir.path);
-
+    String kVmIsolateSnapshotC = path.join(outputDir.path, '$kVmIsolateSnapshot.c');
+    String kIsolateSnapshotC = path.join(outputDir.path, '$kIsolateSnapshot.c');
     String assemblyO = path.join(outputDir.path, 'snapshot_assembly.o');
-    String kDartVmIsolateSnapshotBufferO = path.join(outputDir.path, '$kDartVmIsolateSnapshotBuffer.o');
-    String kDartIsolateSnapshotBufferO = path.join(outputDir.path, '$kDartIsolateSnapshotBuffer.o');
+    String kVmIsolateSnapshotO = path.join(outputDir.path, '$kVmIsolateSnapshot.o');
+    String kIsolateSnapshotO = path.join(outputDir.path, '$kIsolateSnapshot.o');
 
     List<String> commonBuildOptions = <String>['-arch', 'arm64', '-miphoneos-version-min=8.0'];
-    if (!interpreter)
+
+    if (interpreter) {
+      runCheckedSync(<String>['mv', vmIsolateSnapshot, path.join(outputDir.path, kVmIsolateSnapshot)]);
+      runCheckedSync(<String>['mv', isolateSnapshot, path.join(outputDir.path, kIsolateSnapshot)]);
+
+      runCheckedSync(<String>[
+        'xxd', '--include', kVmIsolateSnapshot, path.basename(kVmIsolateSnapshotC)
+      ], workingDirectory: outputDir.path);
+      runCheckedSync(<String>[
+        'xxd', '--include', kIsolateSnapshot, path.basename(kIsolateSnapshotC)
+      ], workingDirectory: outputDir.path);
+
+      runCheckedSync(<String>['xcrun', 'cc']
+        ..addAll(commonBuildOptions)
+        ..addAll(<String>['-c', kVmIsolateSnapshotC, '-o', kVmIsolateSnapshotO]));
+      runCheckedSync(<String>['xcrun', 'cc']
+        ..addAll(commonBuildOptions)
+        ..addAll(<String>['-c', kIsolateSnapshotC, '-o', kIsolateSnapshotO]));
+    } else {
       runCheckedSync(<String>['xcrun', 'cc']
         ..addAll(commonBuildOptions)
         ..addAll(<String>['-c', assembly, '-o', assemblyO]));
-    runCheckedSync(<String>['xcrun', 'cc']
-      ..addAll(commonBuildOptions)
-      ..addAll(<String>['-c', kDartVmIsolateSnapshotBufferC, '-o', kDartVmIsolateSnapshotBufferO]));
-    runCheckedSync(<String>['xcrun', 'cc']
-      ..addAll(commonBuildOptions)
-      ..addAll(<String>['-c', kDartIsolateSnapshotBufferC, '-o', kDartIsolateSnapshotBufferO]));
+    }
 
     String appSo = path.join(outputDir.path, 'app.dylib');
 
@@ -312,11 +314,13 @@
         '-Xlinker', '-rpath', '-Xlinker', '@loader_path/Frameworks',
         '-install_name', '@rpath/app.dylib',
         '-o', appSo,
-        kDartVmIsolateSnapshotBufferO,
-        kDartIsolateSnapshotBufferO,
     ]);
-    if (!interpreter)
+    if (interpreter) {
+      linkCommand.add(kVmIsolateSnapshotO);
+      linkCommand.add(kIsolateSnapshotO);
+    } else {
       linkCommand.add(assemblyO);
+    }
     runCheckedSync(linkCommand);
   }
 

packages/flutter_tools/lib/src/devfs.dart

diff --git a/packages/flutter_tools/lib/src/devfs.dart b/packages/flutter_tools/lib/src/devfs.dart
index 0044c9d..23c9f5f 100644
--- a/packages/flutter_tools/lib/src/devfs.dart
+++ b/packages/flutter_tools/lib/src/devfs.dart
@@ -222,14 +222,19 @@
 
   Future<Null> _scheduleWrite(DevFSEntry entry,
                               DevFSProgressReporter progressReporter) async {
-    HttpClientRequest request = await _client.putUrl(httpAddress);
-    request.headers.removeAll(HttpHeaders.ACCEPT_ENCODING);
-    request.headers.add('dev_fs_name', fsName);
-    request.headers.add('dev_fs_path', entry.devicePath);
-    Stream<List<int>> contents = entry.contentsAsCompressedStream();
-    await request.addStream(contents);
-    HttpClientResponse response = await request.close();
-    await response.drain();
+    try {
+      HttpClientRequest request = await _client.putUrl(httpAddress);
+      request.headers.removeAll(HttpHeaders.ACCEPT_ENCODING);
+      request.headers.add('dev_fs_name', fsName);
+      request.headers.add('dev_fs_path_b64',
+                          BASE64.encode(UTF8.encode(entry.devicePath)));
+      Stream<List<int>> contents = entry.contentsAsCompressedStream();
+      await request.addStream(contents);
+      HttpClientResponse response = await request.close();
+      await response.drain();
+    } catch (e, stackTrace) {
+      printError('Error writing "${entry.devicePath}" to DevFS: $e\n$stackTrace');
+    }
     if (progressReporter != null) {
       _done++;
       progressReporter(_done, _max);