Ensure Surface size always matches window size on swap

ui/compositor/test/in_process_context_factory.h

Index: ui/compositor/test/in_process_context_factory.h
diff --git a/ui/compositor/test/in_process_context_factory.h b/ui/compositor/test/in_process_context_factory.h
index 04ae86f0468b24d7619aef9adf6cfdafb37dc81f..6fd4eaa39f658b72faaffd233367363b866c61c1 100644
--- a/ui/compositor/test/in_process_context_factory.h
+++ b/ui/compositor/test/in_process_context_factory.h
@@ -47,6 +47,8 @@ class InProcessContextFactory : public ContextFactory {
   gpu::GpuMemoryBufferManager* GetGpuMemoryBufferManager() override;
   base::MessageLoopProxy* GetCompositorMessageLoop() override;
   scoped_ptr<cc::SurfaceIdAllocator> CreateSurfaceIdAllocator() override;
+  void ResizeDisplay(ui::Compositor* compositor,
+                     const gfx::Size& size) override;
 
  private:
   scoped_ptr<base::Thread> compositor_thread_;