Switch from app.flx to flutter_assets (#13656)

dev/benchmarks/microbenchmarks/ios/Runner.xcodeproj/project.pbxproj

diff --git a/dev/benchmarks/microbenchmarks/ios/Runner.xcodeproj/project.pbxproj b/dev/benchmarks/microbenchmarks/ios/Runner.xcodeproj/project.pbxproj
index 8148cba..17f0b63 100644
--- a/dev/benchmarks/microbenchmarks/ios/Runner.xcodeproj/project.pbxproj
+++ b/dev/benchmarks/microbenchmarks/ios/Runner.xcodeproj/project.pbxproj
@@ -7,6 +7,7 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		2D5378261FAA1A9400D5DBA9 /* flutter_assets in Resources */ = {isa = PBXBuildFile; fileRef = 2D5378251FAA1A9400D5DBA9 /* flutter_assets */; };
 		746232581E83C0C200CC1A5E /* App.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 746232571E83C0C200CC1A5E /* App.framework */; };
 		746232591E83C0C200CC1A5E /* App.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 746232571E83C0C200CC1A5E /* App.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 		7462325D1E83C18C00CC1A5E /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 7462325C1E83C18C00CC1A5E /* AppFrameworkInfo.plist */; };
@@ -14,7 +15,6 @@
 		9705A1C71CF904A300538489 /* Flutter.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 9740EEBA1CF902C7004384FC /* Flutter.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 		9740EEB41CF90195004384FC /* Flutter.xcconfig in Resources */ = {isa = PBXBuildFile; fileRef = 9740EEB21CF90195004384FC /* Flutter.xcconfig */; };
 		9740EEB51CF90195004384FC /* Generated.xcconfig in Resources */ = {isa = PBXBuildFile; fileRef = 9740EEB31CF90195004384FC /* Generated.xcconfig */; };
-		9740EEBB1CF902C7004384FC /* app.flx in Resources */ = {isa = PBXBuildFile; fileRef = 9740EEB71CF902C7004384FC /* app.flx */; };
 		97C146F31CF9000F007C117D /* main.m in Sources */ = {isa = PBXBuildFile; fileRef = 97C146F21CF9000F007C117D /* main.m */; };
 		97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
 		97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FD1CF9000F007C117D /* Assets.xcassets */; };
@@ -37,11 +37,11 @@
 /* End PBXCopyFilesBuildPhase section */
 
 /* Begin PBXFileReference section */
+		2D5378251FAA1A9400D5DBA9 /* flutter_assets */ = {isa = PBXFileReference; lastKnownFileType = folder; name = flutter_assets; path = Flutter/flutter_assets; sourceTree = SOURCE_ROOT; };
 		746232571E83C0C200CC1A5E /* App.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = App.framework; path = Flutter/App.framework; sourceTree = "<group>"; };
 		7462325C1E83C18C00CC1A5E /* AppFrameworkInfo.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; name = AppFrameworkInfo.plist; path = Flutter/AppFrameworkInfo.plist; sourceTree = "<group>"; };
 		9740EEB21CF90195004384FC /* Flutter.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; name = Flutter.xcconfig; path = Flutter/Flutter.xcconfig; sourceTree = "<group>"; };
 		9740EEB31CF90195004384FC /* Generated.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; name = Generated.xcconfig; path = Flutter/Generated.xcconfig; sourceTree = "<group>"; };
-		9740EEB71CF902C7004384FC /* app.flx */ = {isa = PBXFileReference; lastKnownFileType = file; name = app.flx; path = Flutter/app.flx; sourceTree = "<group>"; };
 		9740EEBA1CF902C7004384FC /* Flutter.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Flutter.framework; path = Flutter/Flutter.framework; sourceTree = "<group>"; };
 		97C146EE1CF9000F007C117D /* Runner.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Runner.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		97C146F21CF9000F007C117D /* main.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = main.m; sourceTree = "<group>"; };
@@ -67,9 +67,9 @@
 		9740EEB11CF90186004384FC /* Flutter */ = {
 			isa = PBXGroup;
 			children = (
+				2D5378251FAA1A9400D5DBA9 /* flutter_assets */,
 				7462325C1E83C18C00CC1A5E /* AppFrameworkInfo.plist */,
 				746232571E83C0C200CC1A5E /* App.framework */,
-				9740EEB71CF902C7004384FC /* app.flx */,
 				9740EEBA1CF902C7004384FC /* Flutter.framework */,
 				9740EEB21CF90195004384FC /* Flutter.xcconfig */,
 				9740EEB31CF90195004384FC /* Generated.xcconfig */,
@@ -173,7 +173,7 @@
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				9740EEBB1CF902C7004384FC /* app.flx in Resources */,
+				2D5378261FAA1A9400D5DBA9 /* flutter_assets in Resources */,
 				97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */,
 				9740EEB51CF90195004384FC /* Generated.xcconfig in Resources */,
 				7462325D1E83C18C00CC1A5E /* AppFrameworkInfo.plist in Resources */,