[Chromecast] Fix assert failure + add test in SwapWithBounds path

cc/output/gl_renderer.h

 // Copyright 2010 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_GL_RENDERER_H_
 #define CC_OUTPUT_GL_RENDERER_H_
 
 #include <deque>
 #include <vector>
 
@@ skipping 37 matching lines @@
  public:
   class ScopedUseGrContext;
 
   GLRenderer(const RendererSettings* settings,
              OutputSurface* output_surface,
              ResourceProvider* resource_provider,
              TextureMailboxDeleter* texture_mailbox_deleter,
              int highp_threshold_min);
   ~GLRenderer() override;
 
+  bool use_swap_with_bounds() const { return use_swap_with_bounds_; }
+
   void SwapBuffers(std::vector<ui::LatencyInfo> latency_info) override;
   void SwapBuffersComplete() override;
 
   void DidReceiveTextureInUseResponses(
       const gpu::TextureInUseResponses& responses) override;
 
   virtual bool IsContextLost();
 
  protected:
   void DidChangeVisibility() override;
@@ skipping 238 matching lines @@
            std::map<gfx::ColorSpace, std::unique_ptr<gfx::ColorTransform>>>
       color_transform_cache_;
 
   gpu::gles2::GLES2Interface* gl_;
   gpu::ContextSupport* context_support_;
   std::unique_ptr<ContextCacheController::ScopedVisibility> context_visibility_;
 
   TextureMailboxDeleter* texture_mailbox_deleter_;
 
   gfx::Rect swap_buffer_rect_;
+  std::vector<gfx::Rect> swap_content_bounds_;
   gfx::Rect scissor_rect_;
   bool is_scissor_enabled_ = false;
   bool stencil_shadow_ = false;
   bool blend_shadow_ = false;
   const Program* current_program_ = nullptr;
   TexturedQuadDrawCache draw_cache_;
   int highp_threshold_min_ = 0;
   int highp_threshold_cache_ = 0;
 
   struct PendingAsyncReadPixels;
@@ skipping 37 matching lines @@
   gfx::Size offscreen_stencil_renderbuffer_size_;
 
   base::WeakPtrFactory<GLRenderer> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GLRenderer);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_GL_RENDERER_H_