cc: Delete the Renderer base class.

cc/test/pixel_test.h

Index: cc/test/pixel_test.h
diff --git a/cc/test/pixel_test.h b/cc/test/pixel_test.h
index 4f9eb6eb1db268bbedb2f9a8908b8d2a71b9ee2d..61a6dbfba5af28695c8f3dc4167d46b25774ffd0 100644
--- a/cc/test/pixel_test.h
+++ b/cc/test/pixel_test.h
@@ -25,7 +25,7 @@ class SoftwareRenderer;
 class TestGpuMemoryBufferManager;
 class TestSharedBitmapManager;
 
-class PixelTest : public testing::Test, RendererClient {
+class PixelTest : public testing::Test, DirectRendererClient {
  protected:
   PixelTest();
   ~PixelTest() override;
@@ -71,7 +71,7 @@ class PixelTest : public testing::Test, RendererClient {
   void ForceDeviceClip(const gfx::Rect& clip);
   void EnableExternalStencilTest();
 
-  // RendererClient implementation.
+  // DirectRendererClient implementation.
   void SetFullRootLayerDamage() override {}
 
  private:
@@ -99,7 +99,7 @@ class RendererPixelTest : public PixelTest {
 // have an externally determined size and offset.
 class GLRendererWithExpandedViewport : public GLRenderer {
  public:
-  GLRendererWithExpandedViewport(RendererClient* client,
+  GLRendererWithExpandedViewport(DirectRendererClient* client,
                                  const RendererSettings* settings,
                                  OutputSurface* output_surface,
                                  ResourceProvider* resource_provider,
@@ -115,7 +115,7 @@ class GLRendererWithExpandedViewport : public GLRenderer {
 
 class SoftwareRendererWithExpandedViewport : public SoftwareRenderer {
  public:
-  SoftwareRendererWithExpandedViewport(RendererClient* client,
+  SoftwareRendererWithExpandedViewport(DirectRendererClient* client,
                                        const RendererSettings* settings,
                                        OutputSurface* output_surface,
                                        ResourceProvider* resource_provider)
@@ -124,7 +124,7 @@ class SoftwareRendererWithExpandedViewport : public SoftwareRenderer {
 
 class GLRendererWithFlippedSurface : public GLRenderer {
  public:
-  GLRendererWithFlippedSurface(RendererClient* client,
+  GLRendererWithFlippedSurface(DirectRendererClient* client,
                                const RendererSettings* settings,
                                OutputSurface* output_surface,
                                ResourceProvider* resource_provider,