sync compositor: Merge input path with chrome

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index 22afe190c277d16dba2c5976048355ef94c2b30f..559d0ec23d819b5912aaa1984dae3724603541eb 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -917,6 +917,11 @@ const char kWebRtcMaxCaptureFramerate[]     = "max-gum-fps";
 #endif
 
 #if defined(OS_ANDROID)
+// Use Chrome's async input code path for synchronous compositing. Requires
+// IPC-based synchronous compositing. This switch is temporary while feature
+// is under development, which is tracked in crbug.com/545628.
+const char kAsyncInputForSyncCompositor[] = "async-input-for-sync-compositor";
+
 // Disable external animation system for Android compositor.
 // See also kDisableCompositorAnimationTimelines for renderer compositors.
 const char kDisableAndroidCompositorAnimationTimelines[] =