cc: Remove OutputSurfaceClient::DidSwapBuffers().

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 "base/memory/ptr_util.h"
 #include "base/test/test_simple_task_runner.h"
 #include "cc/output/managed_memory_policy.h"
 #include "cc/output/output_surface_client.h"
@@ skipping 25 matching lines @@
       std::unique_ptr<SoftwareOutputDevice> software_device)
       : OutputSurface(nullptr, nullptr, std::move(software_device)) {}
 
   TestOutputSurface(scoped_refptr<TestContextProvider> context_provider,
                     std::unique_ptr<SoftwareOutputDevice> software_device)
       : OutputSurface(std::move(context_provider),
                       nullptr,
                       std::move(software_device)) {}
 
   void SwapBuffers(CompositorFrame frame) override {
-    client_->DidSwapBuffers();
     client_->DidSwapBuffersComplete();
   }
   uint32_t GetFramebufferCopyTextureFormat() override {
     // TestContextProvider has no real framebuffer, just use RGB.
     return GL_RGB;
   }
 
-  void DidSwapBuffersForTesting() { client_->DidSwapBuffers(); }
-
   void OnSwapBuffersCompleteForTesting() { client_->DidSwapBuffersComplete(); }
 
  protected:
 };
 
 class TestSoftwareOutputDevice : public SoftwareOutputDevice {
  public:
   TestSoftwareOutputDevice();
   ~TestSoftwareOutputDevice() override;
 
@@ skipping 92 matching lines @@
   EXPECT_EQ(1, software_output_device->ensure_backbuffer_count());
   EXPECT_EQ(0, software_output_device->discard_backbuffer_count());
   output_surface.DiscardBackbuffer();
 
   EXPECT_EQ(1, software_output_device->ensure_backbuffer_count());
   EXPECT_EQ(1, software_output_device->discard_backbuffer_count());
 }
 
 }  // namespace
 }  // namespace cc