Fix the mac hangup when force-compositing-mode is enabled

chrome/browser/renderer_host/accelerated_plugin_view_mac.h

 // Copyright (c) 2011 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 CHROME_BROWSER_RENDERER_HOST_ACCELERATED_PLUGIN_VIEW_MAC_H
 #define CHROME_BROWSER_RENDERER_HOST_ACCELERATED_PLUGIN_VIEW_MAC_H
 
 #import <Cocoa/Cocoa.h>
 #include <QuartzCore/QuartzCore.h>
 
@@ skipping 60 matching lines @@
 
   // -globalFrameDidChange: can be called recursively, this counts how often it
   // holds the CGL lock.
   int globalFrameDidChangeCGLLockCount_;
 }
 
 - (id)initWithRenderWidgetHostViewMac:(RenderWidgetHostViewMac*)r
                          pluginHandle:(gfx::PluginWindowHandle)pluginHandle;
 - (void)drawView;
 
+// Set the view for the GL context and initialize and start the display link
+// thread.
+- (void)setViewForGL;

[Ken Russell (switch to Gerrit), 2011/06/10 01:30:12]

I find this method name confusing because it sounds like a setter rather than
something which performs setup. What about something like prepareForGLRendering?

[jbates, 2011/06/11 02:00:44]

Good point, done.

+
 // Sets the list of rectangles that should show the web page, rather than the
 // accelerated plugin. This is used to simulate the iframe-based trick that web
 // pages have long used to show web content above windowed plugins on Windows
 // and Linux.
 - (void)setCutoutRects:(NSArray*)cutout_rects;
 
 // Updates the number of swap buffers calls that have been requested.
 // This is currently called with non-zero values only in response to
 // updates from the GPU process. For accelerated plugins, all zeros
 // are passed, and the view takes this as a hint that no flow control
 // or acknowledgment of the swap buffers are desired.
 - (void)updateSwapBuffersCount:(uint64)count
                   fromRenderer:(int)rendererId
                        routeId:(int32)routeId
                      gpuHostId:(int)gpuHostId;
 
 // NSViews autorelease subviews when they die. The RWHVMac gets destroyed when
 // RHWVCocoa gets dealloc'd, which means the AcceleratedPluginView child views
 // can be around a little longer than the RWHVMac. This is called when the
 // RWHVMac is about to be deleted (but it's still valid while this method runs).
 - (void)onRenderWidgetHostViewGone;
 
 // This _must_ be atomic, since it's accessed from several threads.
 @property NSSize cachedSize;
 @end
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_ACCELERATED_PLUGIN_VIEW_MAC_H