Use ChannelMojo between app shims and the browser process.

chrome/app_shim/chrome_main_app_mode_mac.mm

 // Copyright 2013 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.
 
 // On Mac, one can't make shortcuts with command-line arguments. Instead, we
 // produce small app bundles which locate the Chromium framework and load it,
 // passing the appropriate data. This is the entry point into the framework for
 // those app bundles.
 
 #import <Cocoa/Cocoa.h>
@@ skipping 16 matching lines @@
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/threading/thread.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/mac/app_mode_common.h"
 #include "chrome/common/mac/app_shim_messages.h"
 #include "chrome/grit/generated_resources.h"
+#include "ipc/ipc_channel_mojo.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_message.h"
+#include "mojo/edk/embedder/embedder.h"
+#include "mojo/edk/embedder/named_platform_handle.h"
+#include "mojo/edk/embedder/named_platform_handle_utils.h"
+#include "mojo/edk/embedder/scoped_ipc_support.h"
+#include "mojo/edk/embedder/scoped_platform_handle.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
 namespace {
 
 // Timeout in seconds to wait for a reply for the initial Apple Event. Note that
 // kAEDefaultTimeout on Mac is "about one minute" according to Apple's
 // documentation, but is no longer supported for asynchronous Apple Events.
 const int kPingChromeTimeoutSeconds = 60;
 
@@ skipping 155 matching lines @@
     return;
   }
 
   app_mode::VerifySocketPermissions(socket_path);
 
   CreateChannelAndSendLaunchApp(socket_path);
 }
 
 void AppShimController::CreateChannelAndSendLaunchApp(
     const base::FilePath& socket_path) {
-  IPC::ChannelHandle handle(socket_path.value());
-  channel_ = IPC::ChannelProxy::Create(handle, IPC::Channel::MODE_NAMED_CLIENT,
-                                       this, g_io_thread->task_runner().get());
+  channel_ = IPC::ChannelProxy::Create(
+      IPC::ChannelMojo::CreateClientFactory(
+          mojo::edk::ConnectToPeerProcess(mojo::edk::CreateClientHandle(
+              mojo::edk::NamedPlatformHandle(socket_path.value()))),
+          g_io_thread->task_runner().get()),
+      this, g_io_thread->task_runner().get());
 
   bool launched_by_chrome = base::CommandLine::ForCurrentProcess()->HasSwitch(
       app_mode::kLaunchedByChromeProcessId);
   apps::AppShimLaunchType launch_type = launched_by_chrome ?
           apps::APP_SHIM_LAUNCH_REGISTER_ONLY : apps::APP_SHIM_LAUNCH_NORMAL;
 
   [delegate_ setController:this];
 
   std::vector<base::FilePath> files;
   [delegate_ getFilesToOpenAtStartup:&files];
@@ skipping 394 matching lines @@
   ui::ResourceBundle::InitSharedInstanceWithLocale(
       locale, NULL, ui::ResourceBundle::DO_NOT_LOAD_COMMON_RESOURCES);
 
   // Launch the IO thread.
   base::Thread::Options io_thread_options;
   io_thread_options.message_loop_type = base::MessageLoop::TYPE_IO;
   base::Thread *io_thread = new base::Thread("CrAppShimIO");
   io_thread->StartWithOptions(io_thread_options);
   g_io_thread = io_thread;
 
+  mojo::edk::Init();
+  mojo::edk::ScopedIPCSupport ipc_support(io_thread->task_runner());
+
   // Find already running instances of Chrome.
   pid_t pid = -1;
   std::string chrome_process_id =
       base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
           app_mode::kLaunchedByChromeProcessId);
   if (!chrome_process_id.empty()) {
     if (!base::StringToInt(chrome_process_id, &pid))
       LOG(FATAL) << "Invalid PID: " << chrome_process_id;
   } else {
     NSString* chrome_bundle_id = [base::mac::OuterBundle() bundleIdentifier];
@@ skipping 54 matching lines @@
     // which is preferable to waiting for the Apple Event to timeout after one
     // minute.
     main_message_loop.task_runner()->PostTask(
         FROM_HERE,
         base::Bind(&AppShimController::Init, base::Unretained(&controller)));
   }
 
   main_message_loop.Run();
   return 0;
 }