cc: Make OutputSurface::SwapBuffers pure virtual

cc/trees/layer_tree_host_impl_unittest.cc

 // Copyright 2011 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/trees/layer_tree_host_impl.h"
 
 #include <cmath>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 4377 matching lines @@
 }
 
 // Make sure damage tracking propagates all the way to the graphics context,
 // where it should request to swap only the sub-buffer that is damaged.
 TEST_F(LayerTreeHostImplTest, PartialSwapReceivesDamageRect) {
   scoped_refptr<TestContextProvider> context_provider(
       TestContextProvider::Create());
   context_provider->BindToCurrentThread();
   context_provider->TestContext3d()->set_have_post_sub_buffer(true);
 
-  scoped_ptr<OutputSurface> output_surface(
+  scoped_ptr<FakeOutputSurface> output_surface(
       FakeOutputSurface::Create3d(context_provider));
+  FakeOutputSurface* fake_output_surface = output_surface.get();
 
   // This test creates its own LayerTreeHostImpl, so
   // that we can force partial swap enabled.
   LayerTreeSettings settings;
   settings.partial_swap_enabled = true;
   scoped_ptr<SharedBitmapManager> shared_bitmap_manager(
       new TestSharedBitmapManager());
   scoped_ptr<LayerTreeHostImpl> layer_tree_host_impl =
       LayerTreeHostImpl::Create(settings,
                                 this,
@@ skipping 18 matching lines @@
   root->AddChild(child.Pass());
   layer_tree_host_impl->active_tree()->SetRootLayer(root.Pass());
 
   LayerTreeHostImpl::FrameData frame;
 
   // First frame, the entire screen should get swapped.
   EXPECT_EQ(DRAW_SUCCESS, layer_tree_host_impl->PrepareToDraw(&frame));
   layer_tree_host_impl->DrawLayers(&frame, gfx::FrameTime::Now());
   layer_tree_host_impl->DidDrawAllLayers(frame);
   layer_tree_host_impl->SwapBuffers(frame);
-  EXPECT_EQ(TestContextSupport::SWAP,
-            context_provider->support()->last_swap_type());
+  gfx::Rect expected_swap_rect(0, 0, 500, 500);
+  EXPECT_EQ(expected_swap_rect.ToString(),
+            fake_output_surface->last_swap_rect().ToString());
 
   // Second frame, only the damaged area should get swapped. Damage should be
   // the union of old and new child rects.
   // expected damage rect: gfx::Rect(26, 28);
   // expected swap rect: vertically flipped, with origin at bottom left corner.
   layer_tree_host_impl->active_tree()->root_layer()->children()[0]->SetPosition(
       gfx::PointF());
   EXPECT_EQ(DRAW_SUCCESS, layer_tree_host_impl->PrepareToDraw(&frame));
   layer_tree_host_impl->DrawLayers(&frame, gfx::FrameTime::Now());
   host_impl_->DidDrawAllLayers(frame);
   layer_tree_host_impl->SwapBuffers(frame);
 
   // Make sure that partial swap is constrained to the viewport dimensions
   // expected damage rect: gfx::Rect(500, 500);
   // expected swap rect: flipped damage rect, but also clamped to viewport
-  EXPECT_EQ(TestContextSupport::PARTIAL_SWAP,
-            context_provider->support()->last_swap_type());
-  gfx::Rect expected_swap_rect(0, 500-28, 26, 28);
+  expected_swap_rect = gfx::Rect(0, 500-28, 26, 28);
   EXPECT_EQ(expected_swap_rect.ToString(),
-            context_provider->support()->
-                last_partial_swap_rect().ToString());
+            fake_output_surface->last_swap_rect().ToString());
 
   layer_tree_host_impl->SetViewportSize(gfx::Size(10, 10));
   // This will damage everything.
   layer_tree_host_impl->active_tree()->root_layer()->SetBackgroundColor(
       SK_ColorBLACK);
   EXPECT_EQ(DRAW_SUCCESS, layer_tree_host_impl->PrepareToDraw(&frame));
   layer_tree_host_impl->DrawLayers(&frame, gfx::FrameTime::Now());
   host_impl_->DidDrawAllLayers(frame);
   layer_tree_host_impl->SwapBuffers(frame);
 
-  EXPECT_EQ(TestContextSupport::SWAP,
-            context_provider->support()->last_swap_type());
+  expected_swap_rect = gfx::Rect(0, 0, 10, 10);
+  EXPECT_EQ(expected_swap_rect.ToString(),
+            fake_output_surface->last_swap_rect().ToString());
 }
 
 TEST_F(LayerTreeHostImplTest, RootLayerDoesntCreateExtraSurface) {
   scoped_ptr<LayerImpl> root =
       FakeDrawableLayerImpl::Create(host_impl_->active_tree(), 1);
   scoped_ptr<LayerImpl> child =
       FakeDrawableLayerImpl::Create(host_impl_->active_tree(), 2);
   child->SetBounds(gfx::Size(10, 10));
   child->SetContentBounds(gfx::Size(10, 10));
   child->SetDrawsContent(true);
@@ skipping 2784 matching lines @@
   // surface.
   EXPECT_EQ(0, num_lost_surfaces_);
   host_impl_->DidLoseOutputSurface();
   EXPECT_EQ(1, num_lost_surfaces_);
   host_impl_->DidLoseOutputSurface();
   EXPECT_LE(1, num_lost_surfaces_);
 }
 
 }  // namespace
 }  // namespace cc