Route OnDragEvent through ViewAndroid tree

content/browser/web_contents/web_contents_view_android.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_WEB_CONTENTS_WEB_CONTENTS_VIEW_ANDROID_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_ANDROID_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 78 matching lines @@
   void StartDragging(const DropData& drop_data,
                      blink::WebDragOperationsMask allowed_ops,
                      const gfx::ImageSkia& image,
                      const gfx::Vector2d& image_offset,
                      const DragEventSourceInfo& event_info,
                      RenderWidgetHostImpl* source_rwh) override;
   void UpdateDragCursor(blink::WebDragOperation operation) override;
   void GotFocus() override;
   void TakeFocus(bool reverse) override;
 
+  // ui::ViewClient implementation.
+  bool OnTouchEvent(const ui::MotionEventAndroid& event,
+                    bool for_touch_handle) override;
+  bool OnDragEvent(const ui::DragEventAndroid& event) override;
+  void OnPhysicalBackingSizeChanged() override;
+
+ private:
   void OnDragEntered(const std::vector<DropData::Metadata>& metadata,
                      const gfx::Point& location,
                      const gfx::Point& screen_location);
   void OnDragUpdated(const gfx::Point& location,
                      const gfx::Point& screen_location);
   void OnDragExited();
   void OnPerformDrop(DropData* drop_data,
                      const gfx::Point& location,
                      const gfx::Point& screen_location);
   void OnDragEnded();
 
-  // ui::ViewClient implementation.
-  bool OnTouchEvent(const ui::MotionEventAndroid& event,
-                    bool for_touch_handle) override;
-  void OnPhysicalBackingSizeChanged() override;
-
- private:
   // The WebContents whose contents we display.
   WebContentsImpl* web_contents_;
 
   // ContentViewCoreImpl is our interface to the view system.
   ContentViewCoreImpl* content_view_core_;
 
   // Handles "overscroll to refresh" events
   std::unique_ptr<ui::OverscrollRefreshHandler> overscroll_refresh_handler_;
 
   // Interface for extensions to WebContentsView. Used to show the context menu.
   std::unique_ptr<WebContentsViewDelegate> delegate_;
 
   // The native view associated with the contents of the web.
   ui::ViewAndroid view_;
 
   // Interface used to get notified of events from the synchronous compositor.
   SynchronousCompositorClient* synchronous_compositor_client_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsViewAndroid);
 };
 
 } // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_ANDROID_H_