Set the unique_event_id when converting from TouchEvent to WebTouchEvent

content/browser/renderer_host/input/motion_event_android.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_BROWSER_RENDERER_HOST_INPUT_MOTION_EVENT_ANDROID_H_
 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_MOTION_EVENT_ANDROID_H_
 
 #include <jni.h>
 
@@ skipping 40 matching lines @@
                      jint action_index,
                      jint android_button_state,
                      jint meta_state,
                      jfloat raw_offset_x_pixels,
                      jfloat raw_offset_y_pixels,
                      const Pointer& pointer0,
                      const Pointer& pointer1);
   ~MotionEventAndroid() override;
 
   // ui::MotionEvent methods.
-  int GetId() const override;
+  uint32 GetUniqueEventId() const override;
   Action GetAction() const override;
   int GetActionIndex() const override;
   size_t GetPointerCount() const override;
   int GetPointerId(size_t pointer_index) const override;
   float GetX(size_t pointer_index) const override;
   float GetY(size_t pointer_index) const override;
   float GetRawX(size_t pointer_index) const override;
   float GetRawY(size_t pointer_index) const override;
   float GetTouchMajor(size_t pointer_index) const override;
   float GetTouchMinor(size_t pointer_index) const override;
@@ skipping 44 matching lines @@
   struct CachedPointer {
     CachedPointer();
     int id;
     gfx::PointF position;
     float touch_major;
     float touch_minor;
     float orientation;
     ToolType tool_type;
   } cached_pointers_[MAX_POINTERS_TO_CACHE];
 
+  // A unique identifier for the Android motion event.
+  const uint32 unique_event_id_;
+
   DISALLOW_COPY_AND_ASSIGN(MotionEventAndroid);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_INPUT_MOTION_EVENT_ANDROID_H_