********** Chromium Blob hacking

content/common/child_thread.cc

 // 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.
 
 #include "content/common/child_thread.h"
 
 #include "base/allocator/allocator_extension.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/process.h"
@@ skipping 174 matching lines @@
   DCHECK(MessageLoop::current() == message_loop());
 
   return router_.ResolveRoute(routing_id);
 }
 
 webkit_glue::ResourceLoaderBridge* ChildThread::CreateBridge(
     const webkit_glue::ResourceLoaderBridge::RequestInfo& request_info) {
   return resource_dispatcher()->CreateBridge(request_info);
 }
 
+static bool SendFromAnyThread(ChildThread* child_thread, IPC::Message* msg) {
+  if (child_thread->message_loop() == MessageLoop::current())
+    child_thread->Send(msg);
+  else
+    child_thread->sync_message_filter()->Send(msg);
+}

[kinuko, 2013/01/07 08:52:01]

This change can probably be landed independently?

+
 base::SharedMemory* ChildThread::AllocateSharedMemory(
     size_t buf_size) {
   scoped_ptr<base::SharedMemory> shared_buf;
 #if defined(OS_WIN)
   shared_buf.reset(new base::SharedMemory);
   if (!shared_buf->CreateAndMapAnonymous(buf_size)) {
     NOTREACHED();
     return NULL;
   }
 #else
   // On POSIX, we need to ask the browser to create the shared memory for us,
   // since this is blocked by the sandbox.
   base::SharedMemoryHandle shared_mem_handle;
-  if (Send(new ChildProcessHostMsg_SyncAllocateSharedMemory(
+  if (SendFromAnyThread(new ChildProcessHostMsg_SyncAllocateSharedMemory(
                    buf_size, &shared_mem_handle))) {
     if (base::SharedMemory::IsHandleValid(shared_mem_handle)) {
       shared_buf.reset(new base::SharedMemory(shared_mem_handle, false));
       if (!shared_buf->Map(buf_size)) {
         NOTREACHED() << "Map failed";
         return NULL;
       }
     } else {
       NOTREACHED() << "Browser failed to allocate shared memory";
       return NULL;
@@ skipping 132 matching lines @@
   // inflight that would addref it.
   Send(new ChildProcessHostMsg_ShutdownRequest);
 }
 
 void ChildThread::EnsureConnected() {
   LOG(INFO) << "ChildThread::EnsureConnected()";
   base::KillProcess(base::GetCurrentProcessHandle(), 0, false);
 }
 
 }  // namespace content