Add rudimentary UpdateService to app_shell

It can download a CRX from the web store using an ID given at the
command line.

This wires up utility process support for app_shell and establishes
a base for factoring additional extensions utility IPCs out of
//chrome in the near future.

BUG=398671
TBR=asargent@chromium.org for cloned dependency on omaha_query_params

Review URL: https://codereview.chromium.org/693233003

Cr-Commit-Position: refs/heads/master@{#303055}

3 files changed, 54 insertions, 0 deletions

diff --git a/extensions/shell/utility/DEPS b/extensions/shell/utility/DEPS
new file mode 100644
index 0000000..8ad521e
--- /dev/null
+++ b/extensions/shell/utility/DEPS
@@ -0,0 +1,3 @@
+include_rules = [
+  "+content/public/utility",
+]
diff --git a/extensions/shell/utility/shell_content_utility_client.cc b/extensions/shell/utility/shell_content_utility_client.cc
new file mode 100644
index 0000000..5fe8c57
--- /dev/null
+++ b/extensions/shell/utility/shell_content_utility_client.cc
@@ -0,0 +1,23 @@
+// 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 "extensions/shell/utility/shell_content_utility_client.h"
+
+namespace extensions {
+
+ShellContentUtilityClient::ShellContentUtilityClient() {
+}
+
+ShellContentUtilityClient::~ShellContentUtilityClient() {
+}
+
+void ShellContentUtilityClient::UtilityThreadStarted() {
+  UtilityHandler::UtilityThreadStarted();
+}
+
+bool ShellContentUtilityClient::OnMessageReceived(const IPC::Message& message) {
+  return utility_handler_.OnMessageReceived(message);
+}
+
+}  // namespace extensions
diff --git a/extensions/shell/utility/shell_content_utility_client.h b/extensions/shell/utility/shell_content_utility_client.h
new file mode 100644
index 0000000..c987427
--- /dev/null
+++ b/extensions/shell/utility/shell_content_utility_client.h
@@ -0,0 +1,28 @@
+// 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 EXTENSIONS_SHELL_UTILITY_SHELL_CONTENT_UTILITY_CLIENT_H_
+#define EXTENSIONS_SHELL_UTILITY_SHELL_CONTENT_UTILITY_CLIENT_H_
+
+#include "content/public/utility/content_utility_client.h"
+#include "extensions/utility/utility_handler.h"
+
+namespace extensions {
+
+class ShellContentUtilityClient : public content::ContentUtilityClient {
+ public:
+  ShellContentUtilityClient();
+  ~ShellContentUtilityClient() override;
+
+  // content::ContentUtilityClient:
+  void UtilityThreadStarted() override;
+  bool OnMessageReceived(const IPC::Message& message) override;
+
+ private:
+  UtilityHandler utility_handler_;
+};
+
+}  // namespace extensions
+
+#endif  // EXTENSIONS_SHELL_UTILITY_SHELL_CONTENT_UTILITY_CLIENT_H_