Remove code used by --disable-delegated-renderer on Mac

content/browser/renderer_host/compositing_iosurface_mac.h

 // Copyright (c) 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 CONTENT_BROWSER_RENDERER_HOST_COMPOSITING_IOSURFACE_MAC_H_
 #define CONTENT_BROWSER_RENDERER_HOST_COMPOSITING_IOSURFACE_MAC_H_
 
 #include <deque>
 #include <list>
 #include <vector>
@@ skipping 151 matching lines @@
       // Texture coordinates are flipped vertically so they can be drawn on
       // a projection with a flipped y-axis (origin is top left).
       verts_[0].set_texcoord(tx1, ty2);
       verts_[1].set_texcoord(tx1, ty1);
       verts_[2].set_texcoord(tx2, ty1);
       verts_[3].set_texcoord(tx2, ty2);
     }
     SurfaceVertex verts_[4];
   };
 
-  // Keeps track of states and buffers for readback of IOSurface.
-  //
-  // TODO(miu): Major code refactoring is badly needed!  To be done in a
-  // soon-upcoming change.  For now, we blatantly violate the style guide with
-  // respect to struct vs. class usage:
-  struct CopyContext {
-    explicit CopyContext(const scoped_refptr<CompositingIOSurfaceContext>& ctx);
-    ~CopyContext();
-
-    // Delete any references to owned OpenGL objects.  This must be called
-    // within the OpenGL context just before destruction.
-    void ReleaseCachedGLObjects();
-
-    // The following two methods assume |num_outputs| has been set, and are
-    // being called within the OpenGL context.
-    void PrepareReadbackFramebuffers();
-    void PrepareForAsynchronousReadback();
-
-    const scoped_ptr<CompositingIOSurfaceTransformer> transformer;
-    GLenum output_readback_format;
-    int num_outputs;
-    GLuint output_textures[3];  // Not owned.
-    // Note: For YUV, the |output_texture_sizes| widths are in terms of 4-byte
-    // quads, not pixels.
-    gfx::Size output_texture_sizes[3];
-    GLuint frame_buffers[3];
-    GLuint pixel_buffers[3];
-    GLuint fence;  // When non-zero, doing an asynchronous copy.
-    int cycles_elapsed;
-    base::Callback<bool(const void*, int)> map_buffer_callback;
-    base::Callback<void(bool)> done_callback;
-  };
-
   CompositingIOSurfaceMac(
       const scoped_refptr<CompositingIOSurfaceContext>& context);
   ~CompositingIOSurfaceMac();
 
-  // If this IOSurface has moved to a different window, use that window's
-  // GL context (if multiple visible windows are using the same GL context
-  // then call to setView call can stall and prevent reaching 60fps).
-  void SwitchToContextOnNewWindow(NSView* view,
-                                  int window_number);
-
   // Returns true if IOSurface is ready to render. False otherwise.
   bool MapIOSurfaceToTextureWithContextCurrent(
       const scoped_refptr<CompositingIOSurfaceContext>& current_context,
       const gfx::Size pixel_size,
       float scale_factor,
       IOSurfaceID io_surface_handle) WARN_UNUSED_RESULT;
 
   void UnrefIOSurfaceWithContextCurrent();
 
   void DrawQuad(const SurfaceQuad& quad);
 
-  // Copy current frame to |target| video frame. This method must be called
-  // within a CGL context. Returns a callback that should be called outside
-  // of the CGL context.
-  // If |called_within_draw| is true this method is called within a drawing
-  // operations. This allow certain optimizations.
-  base::Closure CopyToVideoFrameWithinContext(
-      const gfx::Rect& src_subrect,
-      bool called_within_draw,
-      const scoped_refptr<media::VideoFrame>& target,
-      const base::Callback<void(bool)>& callback);
-
-  // Common GPU-readback copy path.  Only one of |bitmap_output| or
-  // |video_frame_output| may be specified: Either ARGB is written to
-  // |bitmap_output| or letter-boxed YV12 is written to |video_frame_output|.
-  base::Closure CopyToSelectedOutputWithinContext(
-      const gfx::Rect& src_pixel_subrect,
-      const gfx::Rect& dst_pixel_rect,
-      bool called_within_draw,
-      const SkBitmap* bitmap_output,
-      const scoped_refptr<media::VideoFrame>& video_frame_output,
-      const base::Callback<void(bool)>& done_callback);
-
-  // TODO(hclam): These two methods should be static.
-  void AsynchronousReadbackForCopy(
-      const gfx::Rect& dst_pixel_rect,
-      bool called_within_draw,
-      CopyContext* copy_context,
-      const SkBitmap* bitmap_output,
-      const scoped_refptr<media::VideoFrame>& video_frame_output);
-  bool SynchronousReadbackForCopy(
-      const gfx::Rect& dst_pixel_rect,
-      CopyContext* copy_context,
-      const SkBitmap* bitmap_output,
-      const scoped_refptr<media::VideoFrame>& video_frame_output);
-
-  void CheckIfAllCopiesAreFinishedWithinContext(
-      bool block_until_finished,
-      std::vector<base::Closure>* done_callbacks);
-
-  void FailAllCopies();
-  void DestroyAllCopyContextsWithinContext();
-
   // Check for GL errors and store the result in error_. Only return new
   // errors
   GLenum GetAndSaveGLError();
 
-  gfx::Rect IntersectWithIOSurface(const gfx::Rect& rect) const;
-
   // Offscreen context used for all operations other than drawing to the
   // screen. This is in the same share group as the contexts used for
   // drawing, and is the same for all IOSurfaces in all windows.
   scoped_refptr<CompositingIOSurfaceContext> offscreen_context_;
 
   // IOSurface data.
   IOSurfaceID io_surface_handle_;
   base::ScopedCFTypeRef<IOSurfaceRef> io_surface_;
 
   // The width and height of the io surface.
   gfx::Size pixel_io_surface_size_;  // In pixels.
   gfx::Size dip_io_surface_size_;  // In view / density independent pixels.
   float scale_factor_;
 
   // The "live" OpenGL texture referring to this IOSurfaceRef. Note
   // that per the CGLTexImageIOSurface2D API we do not need to
   // explicitly update this texture's contents once created. All we
   // need to do is ensure it is re-bound before attempting to draw
   // with it.
   GLuint texture_;
 
-  // A pool of CopyContexts with OpenGL objects ready for re-use.  Prefer to
-  // pull one from the pool before creating a new CopyContext.
-  std::vector<CopyContext*> copy_context_pool_;
-
-  // CopyContexts being used for in-flight copy operations.
-  std::deque<CopyContext*> copy_requests_;
-
-  // Timer for finishing a copy operation.
-  base::Timer finish_copy_timer_;
-
   // Error saved by GetAndSaveGLError
   GLint gl_error_;
 
   // Aggressive IOSurface eviction logic. When using CoreAnimation, IOSurfaces
   // are used only transiently to transfer from the GPU process to the browser
   // process. Once the IOSurface has been drawn to its CALayer, the CALayer
   // will not need updating again until its view is hidden and re-shown.
   // Aggressively evict surfaces when more than 8 (the number allowed by the
   // memory manager for fast tab switching) are allocated.
   enum {
     kMaximumUnevictedSurfaces = 8,
   };
   typedef std::list<CompositingIOSurfaceMac*> EvictionQueue;
   void EvictionMarkUpdated();
   void EvictionMarkEvicted();
   EvictionQueue::iterator eviction_queue_iterator_;
   bool eviction_has_been_drawn_since_updated_;
 
   static void EvictionScheduleDoEvict();
   static void EvictionDoEvict();
   static base::LazyInstance<EvictionQueue> eviction_queue_;
   static bool eviction_scheduled_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_COMPOSITING_IOSURFACE_MAC_H_