Implement transform/clip support for Android WebView.

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 "base/cancelable_callback.h"
 #include "cc/base/cc_export.h"
 #include "cc/base/scoped_ptr_vector.h"
@@ skipping 86 matching lines @@
 
   void GetFramebufferPixelsAsync(gfx::Rect rect,
                                  bool flipped_y,
                                  scoped_ptr<CopyOutputRequest> request);
   bool GetFramebufferTexture(ScopedResource* resource, gfx::Rect device_rect);
   void ReleaseRenderPassTextures();
 
   virtual void BindFramebufferToOutputSurface(DrawingFrame* frame) OVERRIDE;
   virtual bool BindFramebufferToTexture(DrawingFrame* frame,
                                         const ScopedResource* resource,
-                                        gfx::Rect framebuffer_rect) OVERRIDE;
-  virtual void SetDrawViewportSize(gfx::Size viewport_size) OVERRIDE;
+                                        gfx::Rect target_rect) OVERRIDE;
+  virtual void SetDrawViewport(gfx::Rect window_space_viewport) OVERRIDE;
   virtual void SetScissorTestRect(gfx::Rect scissor_rect) OVERRIDE;
   virtual void ClearFramebuffer(DrawingFrame* frame) OVERRIDE;
   virtual void DoDrawQuad(DrawingFrame* frame, const class DrawQuad*) OVERRIDE;
   virtual void BeginDrawingFrame(DrawingFrame* frame) OVERRIDE;
   virtual void FinishDrawingFrame(DrawingFrame* frame) OVERRIDE;
   virtual bool FlippedFramebuffer() const OVERRIDE;
   virtual void EnsureScissorTestEnabled() OVERRIDE;
   virtual void EnsureScissorTestDisabled() OVERRIDE;
   virtual void CopyCurrentRenderPassToBitmap(
       DrawingFrame* frame,
@@ skipping 273 matching lines @@
   scoped_ptr<VideoYUVProgram> video_yuv_program_;
   scoped_ptr<VideoStreamTextureProgram> video_stream_texture_program_;
 
   scoped_ptr<VideoYUVProgram> video_yuv_program_highp_;
   scoped_ptr<VideoStreamTextureProgram> video_stream_texture_program_highp_;
 
   scoped_ptr<DebugBorderProgram> debug_border_program_;
   scoped_ptr<SolidColorProgram> solid_color_program_;
   scoped_ptr<SolidColorProgramAA> solid_color_program_aa_;
 
-  OutputSurface* output_surface_;
   WebKit::WebGraphicsContext3D* context_;
 
   skia::RefPtr<GrContext> gr_context_;
   skia::RefPtr<SkCanvas> sk_canvas_;
 
   gfx::Rect swap_buffer_rect_;
   gfx::Rect scissor_rect_;
-  bool is_viewport_changed_;
   bool is_backbuffer_discarded_;
   bool discard_backbuffer_when_not_visible_;
   bool is_using_bind_uniform_;
   bool visible_;
   bool is_scissor_enabled_;
   bool blend_shadow_;
   unsigned program_shadow_;
   TexturedQuadDrawCache draw_cache_;
   int highp_threshold_min_;
   int highp_threshold_cache_;
 
   struct PendingAsyncReadPixels;
   ScopedPtrVector<PendingAsyncReadPixels> pending_async_read_pixels_;
 
   scoped_ptr<ResourceProvider::ScopedWriteLockGL> current_framebuffer_lock_;
-  gfx::Size current_framebuffer_size_;
 
   scoped_refptr<ResourceProvider::Fence> last_swap_fence_;
 
   SkBitmap on_demand_tile_raster_bitmap_;
   ResourceProvider::ResourceId on_demand_tile_raster_resource_id_;
 
   DISALLOW_COPY_AND_ASSIGN(GLRenderer);
 };
 
 // Setting DEBUG_GL_CALLS to 1 will call glGetError() after almost every GL
 // call made by the compositor. Useful for debugging rendering issues but
 // will significantly degrade performance.
 #define DEBUG_GL_CALLS 0
 
 #if DEBUG_GL_CALLS && !defined(NDEBUG)
 #define GLC(context, x)                                                        \
   (x, GLRenderer::DebugGLCall(&* context, #x, __FILE__, __LINE__))
 #else
 #define GLC(context, x) (x)
 #endif
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_GL_RENDERER_H_