Remove unused function Compositor::setDeviceScaleFactor.

content/browser/renderer_host/compositor_impl_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_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
 #define CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 49 matching lines @@
 
   // ui::ResourceProvider implementation.
   cc::UIResourceId CreateUIResource(cc::UIResourceClient* client) override;
   void DeleteUIResource(cc::UIResourceId resource_id) override;
   bool SupportsETC1NonPowerOfTwo() const override;
 
  private:
   // Compositor implementation.
   void SetRootLayer(scoped_refptr<cc::Layer> root) override;
   void SetSurface(jobject surface) override;
-  void setDeviceScaleFactor(float factor) override;
   void SetWindowBounds(const gfx::Size& size) override;
   void SetHasTransparentBackground(bool flag) override;
   void SetNeedsComposite() override;
   ui::UIResourceProvider& GetUIResourceProvider() override;
   ui::ResourceManager& GetResourceManager() override;
 
   // LayerTreeHostClient implementation.
   void WillBeginMainFrame() override {}
   void DidBeginMainFrame() override {}
   void BeginMainFrame(const cc::BeginFrameArgs& args) override {}
@@ skipping 54 matching lines @@
 
   // Destruction order matters here:
   std::unique_ptr<cc::AnimationHost> animation_host_;
   std::unique_ptr<cc::LayerTreeHost> host_;
   ui::ResourceManagerImpl resource_manager_;
 
   std::unique_ptr<cc::Display> display_;
 
   gfx::Size size_;
   bool has_transparent_background_;
-  float device_scale_factor_;
 
   ANativeWindow* window_;
   gpu::SurfaceHandle surface_handle_;
 
   CompositorClient* client_;
 
   gfx::NativeWindow root_window_;
 
   // Whether we need to update animations on the next composite.
   bool needs_animate_;
@@ skipping 12 matching lines @@
 
   gpu::Capabilities gpu_capabilities_;
   base::WeakPtrFactory<CompositorImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CompositorImpl);
 };
 
 } // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_