Use input events to improve vsync scheduling

content/browser/android/content_view_core_impl.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_ANDROID_CONTENT_VIEW_CORE_IMPL_H_
 #define CONTENT_BROWSER_ANDROID_CONTENT_VIEW_CORE_IMPL_H_
 
 #include <vector>
 
 #include "base/android/jni_helper.h"
@@ skipping 290 matching lines @@
 
   // A compositor layer containing any layer that should be shown.
   scoped_refptr<cc::Layer> root_layer_;
 
   // Whether the renderer backing this ContentViewCore has crashed.
   bool tab_crashed_;
 
   // Whether input events will be consistently delivered at vsync time.
   bool input_events_delivered_at_vsync_;
 
+  // Whether the page has JavaScript handlers for touch events.
+  bool has_touch_event_handlers_;
+
   // Whether a new frame from the renderer is waiting to be displayed by the
   // browser compositor.
   bool renderer_frame_pending_;
 
   float dpi_scale_;
 
   // The owning window that has a hold of main application activity.
   ui::WindowAndroid* window_android_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentViewCoreImpl);
 };
 
 bool RegisterContentViewCore(JNIEnv* env);
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_CONTENT_VIEW_CORE_IMPL_H_