Expand UMA coverage for compositor-handled events and fling FPS

content/child/web_gesture_curve_impl.h

 // Copyright 2014 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_CHILD_WEB_GESTURE_CURVE_IMPL_H_
 #define CONTENT_CHILD_WEB_GESTURE_CURVE_IMPL_H_
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/common/content_export.h"
 #include "third_party/WebKit/public/platform/WebGestureCurve.h"
 #include "ui/gfx/geometry/vector2d_f.h"
 
 namespace blink {
 class WebGestureCurveTarget;
 }
 
 namespace ui {
 class GestureCurve;
 }
 
 namespace content {
 
 class CONTENT_EXPORT WebGestureCurveImpl
     : public NON_EXPORTED_BASE(blink::WebGestureCurve) {
  public:
   static scoped_ptr<blink::WebGestureCurve> CreateFromDefaultPlatformCurve(
       const gfx::Vector2dF& initial_velocity,
-      const gfx::Vector2dF& initial_offset);
-  static scoped_ptr<blink::WebGestureCurve> CreateFrom(
+      const gfx::Vector2dF& initial_offset,
+      bool on_main_thread);
+  static scoped_ptr<blink::WebGestureCurve> CreateFromUICurveForTesting(
       scoped_ptr<ui::GestureCurve> curve,
       const gfx::Vector2dF& initial_offset);
 
   virtual ~WebGestureCurveImpl();
 
   // WebGestureCurve implementation.
   virtual bool apply(double time,
                      blink::WebGestureCurveTarget* target) override;
 
  private:
+  enum class ThreadType {
+    MAIN,
+    IMPL,
+    TEST
+  };
+
   WebGestureCurveImpl(scoped_ptr<ui::GestureCurve> curve,
-                      const gfx::Vector2dF& initial_offset);
+                      const gfx::Vector2dF& initial_offset,
+                      ThreadType animating_thread_type);
 
   scoped_ptr<ui::GestureCurve> curve_;
 
   gfx::Vector2dF last_offset_;
 
+  ThreadType animating_thread_type_;
+  int64 ticks_since_first_animate_;
+  double first_animate_time_;
+  double last_animate_time_;
+
   DISALLOW_COPY_AND_ASSIGN(WebGestureCurveImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_WEB_GESTURE_CURVE_IMPL_H_