cc: Make LayerTreeTests use a DelegatingRenderer and Display.

cc/surfaces/display_unittest.cc

 // Copyright 2015 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/surfaces/display.h"
 
 #include <utility>
 
 #include "base/test/null_task_runner.h"
 #include "cc/output/compositor_frame.h"
@@ skipping 146 matching lines @@
   std::unique_ptr<Display> display_;
   TestSoftwareOutputDevice* software_output_device_ = nullptr;
   FakeOutputSurface* output_surface_ = nullptr;
   TestDisplayScheduler* scheduler_ = nullptr;
 };
 
 class StubDisplayClient : public DisplayClient {
  public:
   void DisplayOutputSurfaceLost() override {}
   void DisplaySetMemoryPolicy(const ManagedMemoryPolicy& policy) override {}
+  void DisplayWillDrawAndSwap(bool will_draw_and_swap,
+                              const RenderPassList& render_passes) override {}
+  void DisplayDidDrawAndSwap() override {}
 };
 
 void CopyCallback(bool* called, std::unique_ptr<CopyOutputResult> result) {
   *called = true;
 }
 
 // Check that frame is damaged and swapped only under correct conditions.
 TEST_F(DisplayTest, DisplayDamaged) {
   RendererSettings settings;
   settings.partial_swap_enabled = true;
@@ skipping 314 matching lines @@
 
   EXPECT_CALL(*context_ptr, shallowFinishCHROMIUM());
   display_->Resize(gfx::Size(250, 250));
   testing::Mock::VerifyAndClearExpectations(context_ptr);
 
   factory_.Destroy(surface_id);
 }
 
 }  // namespace
 }  // namespace cc