Adds remote devtools support to cast_shell.

This is based largely on ShellDevtoolsDelegate, but is enabled/disabled
conditionally based on a preference value that can be controlled by the
cast receiver.

R=damienv@chromium.org,lcwu@chromium.org,byungchul@chromium.org
BUG=400919

Review URL: https://codereview.chromium.org/454063004

Cr-Commit-Position: refs/heads/master@{#289812}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@289812 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 29 insertions, 0 deletions

diff --git a/chromecast/common/chromecast_config.cc b/chromecast/common/chromecast_config.cc
index f016a68..dfb3866 100644
--- a/chromecast/common/chromecast_config.cc
+++ b/chromecast/common/chromecast_config.cc
@@ -16,6 +16,7 @@
 #include "base/prefs/pref_store.h"
 #include "base/strings/string_number_conversions.h"
 #include "chromecast/common/cast_paths.h"
+#include "chromecast/common/pref_names.h"
 
 namespace chromecast {
 
@@ -71,6 +72,7 @@ ChromecastConfig::~ChromecastConfig() {
 bool ChromecastConfig::Load(PrefRegistrySimple* registry) {
   DCHECK(thread_checker_.CalledOnValidThread());
   VLOG(1) << "Loading config from " << config_path_.value();
+  registry->RegisterIntegerPref(prefs::kRemoteDebuggingPort, 0);
 
   RegisterPlatformPrefs(registry);
 
diff --git a/chromecast/common/pref_names.cc b/chromecast/common/pref_names.cc
new file mode 100644
index 0000000..0fed7c8
--- /dev/null
+++ b/chromecast/common/pref_names.cc
@@ -0,0 +1,13 @@
+// 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 "chromecast/common/pref_names.h"
+
+namespace prefs {
+
+// Port on which to host the remote debugging server. A value of 0 indicates
+// that remote debugging is disabled.
+const char kRemoteDebuggingPort[] = "remote_debugging_port";
+
+}  // namespace prefs
diff --git a/chromecast/common/pref_names.h b/chromecast/common/pref_names.h
new file mode 100644
index 0000000..669f19d
--- /dev/null
+++ b/chromecast/common/pref_names.h
@@ -0,0 +1,14 @@
+// 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 CHROMECAST_COMMON_PREF_NAMES_H_
+#define CHROMECAST_COMMON_PREF_NAMES_H_
+
+namespace prefs {
+
+extern const char kRemoteDebuggingPort[];
+
+}  // namespace prefs
+
+#endif  // CHROMECAST_COMMON_PREF_NAMES_H_