Compute damage rect for Cast video compositing

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 502 matching lines @@
   ResourceFormat current_framebuffer_format_;
 
   class SyncQuery;
   std::deque<std::unique_ptr<SyncQuery>> pending_sync_queries_;
   std::deque<std::unique_ptr<SyncQuery>> available_sync_queries_;
   std::unique_ptr<SyncQuery> current_sync_query_;
   bool use_discard_framebuffer_;
   bool use_sync_query_;
   bool use_blend_equation_advanced_;
   bool use_blend_equation_advanced_coherent_;
+  bool use_swap_with_damage_;
 
   // Some overlays require that content is copied from a render pass into an
   // overlay resource. This means the GLRenderer needs its own ResourcePool.
   std::unique_ptr<ResourcePool> overlay_resource_pool_;
 
   // If true, draw a green border after compositing a texture quad using GL.
   bool gl_composited_texture_quad_border_;
 
   // The method FlippedFramebuffer determines whether the framebuffer associated
   // with a DrawingFrame is flipped. It makes the assumption that the
   // DrawingFrame is being used as part of a render pass. If a DrawingFrame is
   // not being used as part of a render pass, setting it here forces
   // FlippedFramebuffer to return |true|.
   bool force_drawing_frame_framebuffer_unflipped_ = false;
 
   BoundGeometry bound_geometry_;
   ColorLUTCache color_lut_cache_;
   DISALLOW_COPY_AND_ASSIGN(GLRenderer);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_GL_RENDERER_H_