Fix the scale of Drag and Drop shadow image.

content/browser/android/content_view_core_impl.h

 // Copyright 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 <stdint.h>
 
 #include <memory>
@@ skipping 382 matching lines @@
 
   void MoveRangeSelectionExtent(const gfx::PointF& extent);
 
   void SelectBetweenCoordinates(const gfx::PointF& base,
                                 const gfx::PointF& extent);
 
   void OnShowUnhandledTapUIIfNeeded(int x_dip, int y_dip);
 
   ui::ViewAndroid* GetViewAndroid();
 
+  float page_scale() { return page_scale_; }
+
  private:
   class ContentViewUserData;
 
   friend class ContentViewUserData;
   ~ContentViewCoreImpl() override;
 
   // WebContentsObserver implementation.
   void RenderViewReady() override;
   void RenderViewHostChanged(RenderViewHost* old_host,
                              RenderViewHost* new_host) override;
@@ skipping 63 matching lines @@
   scoped_refptr<GinJavaBridgeDispatcherHost> java_bridge_dispatcher_host_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentViewCoreImpl);
 };
 
 bool RegisterContentViewCore(JNIEnv* env);
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_CONTENT_VIEW_CORE_IMPL_H_