2 files changed, 116 insertions, 0 deletions
diff --git a/content/browser/mojo/mojo_application_host.cc b/content/browser/mojo/mojo_application_host.cc
new file mode 100644
index 0000000..48d343a
--- /dev/null
+++ b/content/browser/mojo/mojo_application_host.cc
@@ -0,0 +1,65 @@
+// 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"
+#include "mojo/embedder/platform_channel_pair.h"
+
+namespace content {
+namespace {
+
+base::PlatformFile PlatformFileFromScopedPlatformHandle(
+    mojo::embedder::ScopedPlatformHandle handle) {
+#if defined(OS_POSIX)
+  return handle.release().fd;
+#elif defined(OS_WIN)
+  return handle.release().handle;
+#endif
+}
+
+}  // namespace
+
+MojoApplicationHost::MojoApplicationHost() : did_activate_(false) {
+}
+
+MojoApplicationHost::~MojoApplicationHost() {
+}
+
+bool MojoApplicationHost::Init() {
+  DCHECK(shell_client_.is_null()) << "Already initialized!";
+
+  mojo::embedder::PlatformChannelPair channel_pair;
+
+  mojo::ScopedMessagePipeHandle message_pipe = channel_init_.Init(
+      PlatformFileFromScopedPlatformHandle(channel_pair.PassServerHandle()),
+      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO));
+  if (!message_pipe.is_valid())
+    return false;
+
+  // Forward this to the client once we know its process handle.
+  client_handle_ = channel_pair.PassClientHandle();
+
+  // TODO(darin): Provide a Shell implementation
+  shell_client_.reset(
+      mojo::ScopedShellClientHandle::From(message_pipe.Pass()), NULL);
+
+  return true;
+}
+
+bool MojoApplicationHost::Activate(IPC::Sender* sender,
+                                   base::ProcessHandle process_handle) {
+  DCHECK(!did_activate_);
+  DCHECK(client_handle_.is_valid());
+
+  base::PlatformFile client_file =
+      PlatformFileFromScopedPlatformHandle(client_handle_.Pass());
+  did_activate_ = sender->Send(new MojoMsg_Activate(
+      IPC::GetFileHandleForProcess(client_file, process_handle, true)));
+  return did_activate_;
+}
+
+}  // namespace content
diff --git a/content/browser/mojo/mojo_application_host.h b/content/browser/mojo/mojo_application_host.h
new file mode 100644
index 0000000..68f6c32
--- /dev/null
+++ b/content/browser/mojo/mojo_application_host.h
@@ -0,0 +1,51 @@
+// 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.
+
+#ifndef CONTENT_BROWSER_MOJO_MOJO_APPLICATION_HOST_H_
+#define CONTENT_BROWSER_MOJO_MOJO_APPLICATION_HOST_H_
+
+#include "base/process/process_handle.h"
+#include "mojo/common/channel_init.h"
+#include "mojo/embedder/scoped_platform_handle.h"
+#include "mojo/public/cpp/bindings/remote_ptr.h"
+#include "mojo/public/interfaces/shell/shell.mojom.h"
+
+namespace IPC {
+class Sender;
+}
+
+namespace content {
+
+// MojoApplicationHost represents the code needed on the browser side to setup
+// a child process as a Mojo application via Chrome IPC. The child process
+// should use MojoApplication to handle messages generated by an instance of
+// MojoApplicationHost. MojoApplicationHost makes the mojo::ShellClient
+// interface available so that child-provided services can be invoked.
+class MojoApplicationHost {
+ public:
+  MojoApplicationHost();
+  ~MojoApplicationHost();
+
+  // Two-phase initialization:
+  //  1- Init makes the shell_client() available synchronously.
+  //  2- Activate establishes the actual connection to the peer process.
+  bool Init();
+  bool Activate(IPC::Sender* sender, base::ProcessHandle process_handle);
+
+  bool did_activate() const { return did_activate_; }
+
+  mojo::ShellClient* shell_client() { return shell_client_.get(); }
+
+ private:
+  mojo::common::ChannelInit channel_init_;
+  mojo::embedder::ScopedPlatformHandle client_handle_;
+  mojo::RemotePtr<mojo::ShellClient> shell_client_;
+  bool did_activate_;
+
+  DISALLOW_COPY_AND_ASSIGN(MojoApplicationHost);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_MOJO_MOJO_APPLICATION_HOST_H_