cc: Delete the RendererClient class.

cc/output/software_renderer.h

 // Copyright 2012 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.
 
 #ifndef CC_OUTPUT_SOFTWARE_RENDERER_H_
 #define CC_OUTPUT_SOFTWARE_RENDERER_H_
 
 #include "base/macros.h"
 #include "cc/base/cc_export.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/direct_renderer.h"
 
 namespace cc {
 
 class OutputSurface;
 class RendererClient;
 class ResourceProvider;
 class SoftwareOutputDevice;
 
 class DebugBorderDrawQuad;
 class PictureDrawQuad;
 class RenderPassDrawQuad;
 class SolidColorDrawQuad;
 class TextureDrawQuad;
 class TileDrawQuad;
 
 class CC_EXPORT SoftwareRenderer : public DirectRenderer {
  public:
-  SoftwareRenderer(RendererClient* client,
-                   const RendererSettings* settings,
+  SoftwareRenderer(const RendererSettings* settings,
                    OutputSurface* output_surface,
                    ResourceProvider* resource_provider);
 
   ~SoftwareRenderer() override;
 
   const RendererCapabilitiesImpl& Capabilities() const override;
   void SwapBuffers(CompositorFrameMetadata metadata) override;
-  void DiscardBackbuffer() override;
-  void EnsureBackbuffer() override;
 
   void SetDisablePictureQuadImageFiltering(bool disable) {
     disable_picture_quad_image_filtering_ = disable;
   }
 
  protected:
   void BindFramebufferToOutputSurface(DrawingFrame* frame) override;
   bool BindFramebufferToTexture(DrawingFrame* frame,
                                 const ScopedResource* texture) override;
   void SetScissorTestRect(const gfx::Rect& scissor_rect) override;
@@ skipping 44 matching lines @@
       const gfx::Transform& contents_device_transform) const;
   SkBitmap GetBackdropBitmap(const gfx::Rect& bounding_rect) const;
   sk_sp<SkShader> GetBackgroundFilterShader(
       const DrawingFrame* frame,
       const RenderPassDrawQuad* quad,
       SkShader::TileMode content_tile_mode) const;
 
   bool disable_picture_quad_image_filtering_ = false;
 
   RendererCapabilitiesImpl capabilities_;
-  bool is_scissor_enabled_;
-  bool is_backbuffer_discarded_;
+  bool is_scissor_enabled_ = false;
   gfx::Rect scissor_rect_;
 
   SoftwareOutputDevice* output_device_;
-  SkCanvas* root_canvas_;
-  SkCanvas* current_canvas_;
+  SkCanvas* root_canvas_ = nullptr;
+  SkCanvas* current_canvas_ = nullptr;
   SkPaint current_paint_;
   std::unique_ptr<ResourceProvider::ScopedWriteLockSoftware>
       current_framebuffer_lock_;
   sk_sp<SkCanvas> current_framebuffer_canvas_;
 
   DISALLOW_COPY_AND_ASSIGN(SoftwareRenderer);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_SOFTWARE_RENDERER_H_