Move AW renderer compositor context to gpu thread

android_webview/lib/main/aw_main_delegate.cc

Index: android_webview/lib/main/aw_main_delegate.cc
diff --git a/android_webview/lib/main/aw_main_delegate.cc b/android_webview/lib/main/aw_main_delegate.cc
index c996cc43b24d89cec9bcb982ecae56d480163e1e..323850a6fc7785564479d40b80e11022f449754e 100644
--- a/android_webview/lib/main/aw_main_delegate.cc
+++ b/android_webview/lib/main/aw_main_delegate.cc
@@ -85,6 +85,9 @@ bool AwMainDelegate::BasicStartupComplete(int* exit_code) {
   // This is needed for sharing textures across the different GL threads.
   cl->AppendSwitch(switches::kEnableThreadedTextureMailboxes);
 
+  // Move renderer compositor context to chrome gpu thread.
+  cl->AppendSwitch(switches::kEnableAsyncPixelWithThreadedTextureMailboxes);
+
   // This is needed to be able to mmap the V8 snapshot and ICU data file
   // directly from the WebView .apk.
   // This needs to be here so that it gets to run before the code in