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

content/browser/mojo/mojo_application_host.cc

 // Copyright 2014 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/mojo/mojo_application_host.h"
 
 #include "content/common/mojo/mojo_messages.h"
 #include "content/public/browser/browser_thread.h"
 #include "ipc/ipc_sender.h"
+
+#if defined(USE_CHROME_EDK)
+#include "mojo/edk/embedder/platform_channel_pair.h"
+#else
 #include "third_party/mojo/src/mojo/edk/embedder/platform_channel_pair.h"
+#endif
 
 namespace content {
 namespace {
 
+#if defined(USE_CHROME_EDK)
+base::PlatformFile PlatformFileFromScopedPlatformHandle(
+    mojo::edk::ScopedPlatformHandle handle) {
+#if defined(OS_POSIX)
+  return handle.release().fd;
+#elif defined(OS_WIN)
+  return handle.release().handle;
+#endif
+}
+#else
 base::PlatformFile PlatformFileFromScopedPlatformHandle(
     mojo::embedder::ScopedPlatformHandle handle) {
 #if defined(OS_POSIX)
   return handle.release().fd;
 #elif defined(OS_WIN)
   return handle.release().handle;
 #endif
 }
+#endif
 
 class ApplicationSetupImpl : public ApplicationSetup {
  public:
   ApplicationSetupImpl(ServiceRegistryImpl* service_registry,
                        mojo::InterfaceRequest<ApplicationSetup> request)
       : binding_(this, request.Pass()),
         service_registry_(service_registry) {
   }
 
   ~ApplicationSetupImpl() override {
@@ skipping 20 matching lines @@
   service_registry_android_.reset(
       new ServiceRegistryAndroid(&service_registry_));
 #endif
 }
 
 MojoApplicationHost::~MojoApplicationHost() {
 }
 
 bool MojoApplicationHost::Init() {
   DCHECK(!client_handle_.is_valid()) << "Already initialized!";
-
+#if defined(USE_CHROME_EDK)
+  mojo::edk::PlatformChannelPair channel_pair;
+#else
   mojo::embedder::PlatformChannelPair channel_pair;
+#endif
 
   scoped_refptr<base::TaskRunner> io_task_runner;
   if (io_task_runner_override_) {
     io_task_runner = io_task_runner_override_;
   } else {
     io_task_runner =
         BrowserThread::UnsafeGetMessageLoopForThread(BrowserThread::IO)
           ->task_runner();
   }
 
@@ skipping 31 matching lines @@
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   channel_init_.ShutdownOnIOThread();
 }
 
 void MojoApplicationHost::OverrideIOTaskRunnerForTest(
     scoped_refptr<base::TaskRunner> io_task_runner) {
   io_task_runner_override_ = io_task_runner;
 }
 
 }  // namespace content