Fix painting problem with transparent plugins because plugins were ignoring t...

chrome/common/plugin_messages_internal.h

 // Copyright (c) 2006-2008 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.
 
 #include "base/shared_memory.h"
 #include "chrome/common/ipc_message_macros.h"
 #include "webkit/glue/webcursor.h"
 
 //-----------------------------------------------------------------------------
 // PluginProcess messages
@@ skipping 84 matching lines @@
                               int /* instance_id */)
 
   IPC_SYNC_MESSAGE_CONTROL0_1(PluginMsg_GenerateRouteID,
                              int /* id */)
 
   // The messages below all map to WebPluginDelegate methods.
   IPC_SYNC_MESSAGE_ROUTED1_1(PluginMsg_Init,
                              PluginMsg_Init_Params,
                              bool /* result */)
 
+  // Used to synchronously request a paint for windowless plugins.
+  IPC_SYNC_MESSAGE_ROUTED1_0(PluginMsg_Paint,
+                             gfx::Rect /* damaged_rect */)
+
+  // Sent by the renderer after it paints from its backing store so that the
+  // plugin knows it can send more invalidates.
+  IPC_MESSAGE_ROUTED0(PluginMsg_DidPaint)
+
   IPC_SYNC_MESSAGE_ROUTED0_1(PluginMsg_Print,
                              PluginMsg_PrintResponse_Params /* params */)
 
   IPC_SYNC_MESSAGE_ROUTED0_2(PluginMsg_GetPluginScriptableObject,
                              int /* route_id */,
                              void* /* npobject_ptr */)
 
   IPC_SYNC_MESSAGE_ROUTED1_0(PluginMsg_DidFinishLoadWithReason,
                              int /* reason */)
 
+  // Updates the plugin location.  For windowless plugins, windowless_buffer
+  // contains a buffer that the plugin draws into.  background_buffer is used
+  // for transparent windowless plugins, and holds the background of the plugin
+  // rectangle.
   IPC_MESSAGE_ROUTED5(PluginMsg_UpdateGeometry,
                       gfx::Rect /* window_rect */,
                       gfx::Rect /* clip_rect */,
                       bool /* visible */,
                       SharedMemoryHandle /* windowless_buffer */,
-                      SharedMemoryLock /* windowless_buffer_lock */)
+                      SharedMemoryHandle /* background_buffer */)
 
   IPC_SYNC_MESSAGE_ROUTED0_0(PluginMsg_SetFocus)
 
   IPC_SYNC_MESSAGE_ROUTED1_2(PluginMsg_HandleEvent,
                              NPEvent /* event */,
                              bool /* handled */,
                              WebCursor /* cursor type*/)
 
   IPC_SYNC_MESSAGE_ROUTED2_0(PluginMsg_WillSendRequest,
                              int /* id */,
@@ skipping 59 matching lines @@
   IPC_SYNC_MESSAGE_ROUTED2_0(PluginHostMsg_SetWindow,
                              HWND /* window */,
                              HANDLE /* modal_loop_pump_messages_event */)
 
   IPC_MESSAGE_ROUTED1(PluginHostMsg_URLRequest,
                       PluginHostMsg_URLRequest_Params)
 
   IPC_SYNC_MESSAGE_ROUTED1_0(PluginHostMsg_CancelResource,
                              int /* id */)
 
-  IPC_MESSAGE_ROUTED0(PluginHostMsg_Invalidate)
-
   IPC_MESSAGE_ROUTED1(PluginHostMsg_InvalidateRect,
                       gfx::Rect /* rect */)
 
   IPC_SYNC_MESSAGE_ROUTED1_2(PluginHostMsg_GetWindowScriptNPObject,
                              int /* route id */,
                              bool /* success */,
                              void* /* npobject_ptr */)
 
   IPC_SYNC_MESSAGE_ROUTED1_2(PluginHostMsg_GetPluginElement,
                              int /* route id */,
@@ skipping 82 matching lines @@
   IPC_SYNC_MESSAGE_ROUTED1_2(NPObjectMsg_Evaluate,
                              std::string /* script */,
                              NPVariant_Param /* result_param */,
                              bool /* result */)
 
   IPC_SYNC_MESSAGE_ROUTED1_0(NPObjectMsg_SetException,
                              std::string /* message */)
 
 IPC_END_MESSAGES(NPObject)