Cross-process postMessage

content/browser/renderer_host/render_process_host_impl.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 CONTENT_BROWSER_RENDERER_HOST_BROWSER_RENDER_PROCESS_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_BROWSER_RENDER_PROCESS_HOST_IMPL_H_
 #pragma once
 
 #include <map>
 #include <queue>
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/process.h"
 #include "base/synchronization/waitable_event_watcher.h"
 #include "base/timer.h"
 #include "content/browser/child_process_launcher.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/render_process_host.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "ui/gfx/surface/transport_dib.h"
 
 class CommandLine;
 class RendererMainThread;
 class RenderWidgetHelper;
+struct ViewMsg_PostMessage_Params;
 
 namespace base {
 class WaitableEvent;
 }
 
 // Implements a concrete RenderProcessHost for the browser process for talking
 // to actual renderer processes (as opposed to mocks).
 //
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
@@ skipping 113 matching lines @@
   // Creates and adds the IO thread message filters.
   void CreateMessageFilters();
 
   // Control message handlers.
   void OnShutdownRequest();
   void OnDumpHandlesDone();
   void SuddenTerminationChanged(bool enabled);
   void OnUserMetricsRecordAction(const std::string& action);
   void OnRevealFolderInOS(const FilePath& path);
   void OnSavedPageAsMHTML(int job_id, int64 mhtml_file_size);
+  void OnSendPostMessage(int64 browsing_instance_frame_id,
+                         const ViewMsg_PostMessage_Params& params);

[Charlie Reis, 2011/12/01 23:13:02]

Why put this on RenderProcessHost?  I would have thought you'd look up the
RenderViewHost and send the message from there.

[supersat, 2011/12/09 23:08:20]

The ProxyViewHost (which can send this message on behalf of its frame) doesn't
have a corresponding RenderViewHost. We also don't need anything specific to a
particular RenderViewHost to route the message to the right destination.

[Charlie Reis, 2011/12/12 22:20:36]

Ah, fair enough.

 
   // Generates a command line to be used to spawn a renderer and appends the
   // results to |*command_line|.
   void AppendRendererCommandLine(CommandLine* command_line) const;
 
   // Copies applicable command line switches from the given |browser_cmd| line
   // flags to the output |renderer_cmd| line flags. Not all switches will be
   // copied over.
   void PropagateBrowserCommandLineToRenderer(const CommandLine& browser_cmd,
                                              CommandLine* renderer_cmd) const;
@@ skipping 79 matching lines @@
   // filtering for this at the render widget level.
   bool ignore_input_events_;
 
   // Records the last time we regarded the child process active.
   base::TimeTicks child_process_activity_time_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderProcessHostImpl);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_BROWSER_RENDER_PROCESS_HOST_IMPL_H_