cc: Disable synchronized scrolling on Android.

This mode is currently at 1% stable and the data shows improvements in
scroll latency and smoothness.

R=sunnyps@chromium.org

Bug: 1080911
Change-Id: I3b8e2455eebcf05369758f120bc63cb209162c81
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2427347
Auto-Submit: Khushal <khushalsagar@chromium.org>
Reviewed-by: Sunny Sachanandani <sunnyps@chromium.org>
Commit-Queue: Khushal <khushalsagar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#810017}

cc/base/features.cc

@@ -14,8 +14,13 @@ const base::Feature kImpulseScrollAnimations = {
 
 // Whether the compositor should attempt to sync with the scroll handlers before
 // submitting a frame.
-const base::Feature kSynchronizedScrolling = {"SynchronizedScrolling",
-                                              base::FEATURE_ENABLED_BY_DEFAULT};
+const base::Feature kSynchronizedScrolling = {
+    "SynchronizedScrolling",
+#if defined(OS_ANDROID)
+    base::FEATURE_DISABLED_BY_DEFAULT};
+#else
+    base::FEATURE_ENABLED_BY_DEFAULT};
+#endif
 
 #if !defined(OS_ANDROID)
 // Enables latency recovery on the impl thread.