Enable gesture events handling on Android.

content/browser/android/content_startup_flags.cc

Index: content/browser/android/content_startup_flags.cc
diff --git a/content/browser/android/content_startup_flags.cc b/content/browser/android/content_startup_flags.cc
index b88ff96cff5c5af7ff938f5028edc8244574743d..3c791f1f88c0a31fd51cb0065e77fefbd9b766d0 100644
--- a/content/browser/android/content_startup_flags.cc
+++ b/content/browser/android/content_startup_flags.cc
@@ -50,7 +50,7 @@ void SetContentCommandLineFlags(int max_render_process_count,
 
   CommandLine* parsed_command_line = CommandLine::ForCurrentProcess();
 
-#if !defined(ANDROID_UPSTREAM_BRINGUP)
+
   // TODO(yfriedman): Upstream this when bringing up rendering code and
   // rendering modes. b/6668088
   // Set subflags for the --graphics-mode=XYZ omnibus flag.
@@ -69,15 +69,17 @@ void SetContentCommandLineFlags(int max_render_process_count,
     // Intentionally blank.
   } else if (graphics_mode == switches::kGraphicsModeValueCompositor) {
     SetCommandLineSwitch(switches::kForceCompositingMode);
+#if !defined(ANDROID_UPSTREAM_BRINGUP)

[aelias_OOO_until_Jul13, 2012/07/19 03:43:51]

Let's not leave this around certain flags, we'll forget about them.  The only
one that should be commented out is kEnablePerTilePainting (currently also
disabled downstream).

[Yusuf, 2012/07/19 05:01:52]

Done.

     SetCommandLineSwitch(switches::kEnableAcceleratedPlugins);
     SetCommandLineSwitch(switches::kEnableCompositingForFixedPosition);
-    SetCommandLineSwitch(switches::kEnableThreadedCompositing);
     // Per tile painting saves memory in background tabs (http://b/5669228).
     SetCommandLineSwitch(switches::kEnablePerTilePainting);
+#endif
+    SetCommandLineSwitch(switches::kEnableThreadedCompositing);
+
   } else {
     LOG(FATAL) << "Invalid --graphics-mode flag: " << graphics_mode;
   }
-#endif
 
   if (parsed_command_line->HasSwitch(switches::kRendererProcessLimit)) {
     std::string limit = parsed_command_line->GetSwitchValueASCII(