cc: Make OutputSurface::Reshape abstract

cc/output/output_surface_unittest.cc

 // Copyright 2013 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.
 
 #include "cc/output/output_surface.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "cc/output/output_surface_frame.h"
@@ skipping 13 matching lines @@
       scoped_refptr<TestContextProvider> context_provider)
       : OutputSurface(std::move(context_provider)) {}
 
   explicit TestOutputSurface(
       std::unique_ptr<SoftwareOutputDevice> software_device)
       : OutputSurface(std::move(software_device)) {}
 
   void EnsureBackbuffer() override {}
   void DiscardBackbuffer() override {}
   void BindFramebuffer() override {}
+  void Reshape(const gfx::Size& size,
+               float device_scale_factor,
+               const gfx::ColorSpace& color_space,
+               bool has_alpha) override {}
   void SwapBuffers(OutputSurfaceFrame frame) override {
     client_->DidSwapBuffersComplete();
   }
   uint32_t GetFramebufferCopyTextureFormat() override {
     // TestContextProvider has no real framebuffer, just use RGB.
     return GL_RGB;
   }
   OverlayCandidateValidator* GetOverlayCandidateValidator() const override {
     return nullptr;
   }
@@ skipping 65 matching lines @@
   context_provider->UnboundTestContext3d()->set_context_lost(true);
 
   TestOutputSurface output_surface(context_provider);
 
   FakeOutputSurfaceClient client;
   EXPECT_FALSE(output_surface.BindToClient(&client));
 }
 
 }  // namespace
 }  // namespace cc