Browser Plugin: Add HTML5-like postMessage support

content/common/browser_plugin_messages.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.
 
 // Multiply-included message header, no traditional include guard.
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/process.h"
@@ skipping 107 matching lines @@
 // A embedder sends this message to the browser when it wants
 // to resize a guest plugin container so that the guest is relaid out
 // according to the new size.
 IPC_SYNC_MESSAGE_ROUTED2_0(BrowserPluginHostMsg_ResizeGuest,
                            int /* instance_id*/,
                            BrowserPluginHostMsg_ResizeGuest_Params)
 
 // -----------------------------------------------------------------------------
 // These messages are from the browser process to the embedder.
 
+// Once the swapped out guest RenderView has been created in the embedder render
+// process, the browser process informs the embedder of its routing ID.
+IPC_MESSAGE_CONTROL2(BrowserPluginMsg_GuestContentWindowReady,
+                     int /* instance_id */,
+                     int /* source_routing_id */)
+
+IPC_STRUCT_BEGIN(BrowserPluginMsg_ReceiveMessage_Params)
+  // The routing ID of the swapped out RenderView of the guest
+  // in the embedder render process.
+  IPC_STRUCT_MEMBER(int, source_routing_id)
+  // The origin of the source frame.
+  IPC_STRUCT_MEMBER(string16, source_origin)
+  // The identifier of the source frame in the source process.
+  IPC_STRUCT_MEMBER(int, source_frame_id)
+  // The identifier of the target frame in the target process.
+  IPC_STRUCT_MEMBER(int, target_frame_id)
+  // The serialized script value.
+  IPC_STRUCT_MEMBER(string16, data)
+IPC_STRUCT_END()
+
+// When a guest render process responds to its embedder's message,
+// the message is carried in BrowserPluginMsg_ReceiveMessage's paylod.
+// This IPC targets a particular browser plugin with the embedder
+// to fire a MessageEvent on its element.
+IPC_MESSAGE_CONTROL2(BrowserPluginMsg_ReceiveMessage,
+                     int /* instance_id */,
+                     BrowserPluginMsg_ReceiveMessage_Params /* params */)
+
+
 // When the guest navigates, the browser process informs the embedder through
 // the BrowserPluginMsg_DidNavigate message.
 IPC_MESSAGE_CONTROL3(BrowserPluginMsg_DidNavigate,
                      int /* instance_id */,
                      GURL /* url */,
                      int /* process_id */)
 
 // When the guest crashes, the browser process informs the embedder through this
 // message.
 IPC_MESSAGE_CONTROL1(BrowserPluginMsg_GuestCrashed,
@@ skipping 45 matching lines @@
 IPC_MESSAGE_CONTROL2(BrowserPluginMsg_ShouldAcceptTouchEvents,
                      int /* instance_id */,
                      bool /* accept */)
 
 // The guest has damage it wants to convey to the embedder so that it can
 // update its backing store.
 IPC_MESSAGE_CONTROL3(BrowserPluginMsg_UpdateRect,
                      int /* instance_id */,
                      int /* message_id */,
                      BrowserPluginMsg_UpdateRect_Params)