Initial port of accelerated compositor to Mac OS X 10.6. Reused...

chrome/common/render_messages_internal.h

 // Copyright (c) 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.
 
 // This header is meant to be included in multiple passes, hence no traditional
 // header guard.
 // See ipc_message_macros.h for explanation of the macros and passes.
 
 #include <map>
 #include <string>
@@ skipping 1976 matching lines @@
   IPC_MESSAGE_CONTROL1(ViewHostMsg_FreeTransportDIB,
                        TransportDIB::Id /* DIB id */)
 
   //---------------------------------------------------------------------------
   // Messages related to the GPU plugin on Mac OS X 10.6 and later
 
   // This is sent from the renderer to the browser to allocate a fake
   // PluginWindowHandle on the browser side which is used to identify
   // the plugin to the browser later when backing store is allocated
   // or reallocated. |opaque| indicates whether the plugin's output is
-  // considered to be opaque, as opposed to translucent.
-  IPC_SYNC_MESSAGE_ROUTED1_1(ViewHostMsg_AllocateFakePluginWindowHandle,
+  // considered to be opaque, as opposed to translucent. This message
+  // is reused for rendering the accelerated compositor's output.
+  // |root| indicates whether the output is supposed to cover the
+  // entire window.
+  IPC_SYNC_MESSAGE_ROUTED2_1(ViewHostMsg_AllocateFakePluginWindowHandle,
                              bool /* opaque */,
+                             bool /* root */,
                              gfx::PluginWindowHandle /* id */)
 
   // Destroys a fake window handle previously allocated using
   // AllocateFakePluginWindowHandle.
   IPC_MESSAGE_ROUTED1(ViewHostMsg_DestroyFakePluginWindowHandle,
                       gfx::PluginWindowHandle /* id */)
 
   // This message, used on Mac OS X 10.5 and earlier (no IOSurface support),
   // is sent from the renderer to the browser on behalf of the plug-in
   // to indicate that a new backing store was allocated for that plug-in
@@ skipping 519 matching lines @@
   // Send the tree of accessibility data to the browser, where it's cached
   // in order to respond to OS accessibility queries immediately.
   IPC_MESSAGE_ROUTED1(ViewHostMsg_AccessibilityTree,
                       webkit_glue::WebAccessibility)
 
   // Notifies the TabContents that the content being displayed is PDF.
   // This allows the browser to handle things such as zooming differently.
   IPC_MESSAGE_ROUTED0(ViewHostMsg_SetDisplayingPDFContent)
 
 IPC_END_MESSAGES(ViewHost)