Add a Mojo EDK for Chrome that uses one OS pipe per message pipe.

content/browser/browser_child_process_host_impl.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/browser/browser_child_process_host_impl.h"
 
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/dump_without_crashing.h"
@@ skipping 146 matching lines @@
   const base::CommandLine& browser_command_line =
       *base::CommandLine::ForCurrentProcess();
   static const char* kForwardSwitches[] = {
     switches::kDisableLogging,
     switches::kEnableLogging,
     switches::kIPCConnectionTimeout,
     switches::kLoggingLevel,
     switches::kTraceToConsole,
     switches::kV,
     switches::kVModule,
+    "use-new-edk",  // TODO(use_chrome_edk): temporary.
   };
   cmd_line->CopySwitchesFrom(browser_command_line, kForwardSwitches,
                              arraysize(kForwardSwitches));
 
   child_process_.reset(new ChildProcessLauncher(
       delegate,
       cmd_line,
       data_.id,
       this,
       terminate_on_shutdown));
@@ skipping 211 matching lines @@
 
 #if defined(OS_WIN)
 
 void BrowserChildProcessHostImpl::OnObjectSignaled(HANDLE object) {
   OnChildDisconnected();
 }
 
 #endif
 
 }  // namespace content