[Media Router] Add enable cloud services menu item to contextual menu.

chrome/browser/ui/toolbar/media_router_contextual_menu.cc

Index: chrome/browser/ui/toolbar/media_router_contextual_menu.cc
diff --git a/chrome/browser/ui/toolbar/media_router_contextual_menu.cc b/chrome/browser/ui/toolbar/media_router_contextual_menu.cc
index a67ddf38427968a092a8f0070681b808724f59c9..2c2bd23b27722ec4588e7714adc47ea7061e7d4a 100644
--- a/chrome/browser/ui/toolbar/media_router_contextual_menu.cc
+++ b/chrome/browser/ui/toolbar/media_router_contextual_menu.cc
@@ -20,12 +20,21 @@
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/models/menu_model_delegate.h"
 
+#if defined(GOOGLE_CHROME_BUILD)
+#include "base/prefs/pref_service.h"
+#include "chrome/common/pref_names.h"
+#endif  // defined(GOOGLE_CHROME_BUILD)
+
 MediaRouterContextualMenu::MediaRouterContextualMenu(Browser* browser)
     : browser_(browser),
       menu_model_(this) {
   menu_model_.AddItemWithStringId(IDC_MEDIA_ROUTER_ABOUT,
                                   IDS_MEDIA_ROUTER_ABOUT);
   menu_model_.AddSeparator(ui::NORMAL_SEPARATOR);
+#if defined(GOOGLE_CHROME_BUILD)
+  menu_model_.AddCheckItemWithStringId(IDC_MEDIA_ROUTER_CLOUD_SERVICES_TOGGLE,
+                                       IDS_MEDIA_ROUTER_CLOUD_SERVICES_TOGGLE);
+#endif  // defined(GOOGLE_CHROME_BUILD)
   menu_model_.AddItemWithStringId(IDC_MEDIA_ROUTER_LEARN_MORE,
                                   IDS_MEDIA_ROUTER_LEARN_MORE);
   menu_model_.AddItemWithStringId(IDC_MEDIA_ROUTER_HELP,
@@ -41,6 +50,12 @@ MediaRouterContextualMenu::~MediaRouterContextualMenu() {
 }
 
 bool MediaRouterContextualMenu::IsCommandIdChecked(int command_id) const {
+#if defined(GOOGLE_CHROME_BUILD)
+  if (command_id == IDC_MEDIA_ROUTER_CLOUD_SERVICES_TOGGLE) {
+    return browser_->profile()->GetPrefs()->GetBoolean(
+        prefs::kMediaRouterEnableCloudServices);
+  }
+#endif  // defined(GOOGLE_CHROME_BUILD)
   return false;
 }
 
@@ -48,6 +63,15 @@ bool MediaRouterContextualMenu::IsCommandIdEnabled(int command_id) const {
   return true;
 }
 
+bool MediaRouterContextualMenu::IsCommandIdVisible(int command_id) const {
+#if defined(GOOGLE_CHROME_BUILD)
+  // Cloud services preference is not set or used if sync is disabled.
+  if (command_id == IDC_MEDIA_ROUTER_CLOUD_SERVICES_TOGGLE)
+    return browser_->profile()->IsSyncAllowed();
+#endif  // defined(GOOGLE_CHROME_BUILD)
+  return true;
+}
+
 bool MediaRouterContextualMenu::GetAcceleratorForCommandId(
     int command_id,
     ui::Accelerator* accelerator) {
@@ -63,10 +87,24 @@ void MediaRouterContextualMenu::ExecuteCommand(int command_id,
   const char kCastLearnMorePageUrl[] =
       "https://www.google.com/chrome/devices/chromecast/learn.html";
 
+#if defined(GOOGLE_CHROME_BUILD)
+  PrefService* pref_service;
+#endif  // defined(GOOGLE_CHROME_BUILD)
   switch (command_id) {
     case IDC_MEDIA_ROUTER_ABOUT:
       chrome::ShowSingletonTab(browser_, GURL(kAboutPageUrl));
       break;
+#if defined(GOOGLE_CHROME_BUILD)
+    case IDC_MEDIA_ROUTER_CLOUD_SERVICES_TOGGLE:
+      pref_service = browser_->profile()->GetPrefs();
+      pref_service->SetBoolean(prefs::kMediaRouterEnableCloudServices,
+          !pref_service->GetBoolean(prefs::kMediaRouterEnableCloudServices));
+
+      // If this has been set before, this is a no-op.
+      pref_service->SetBoolean(prefs::kMediaRouterCloudServicesPrefSet,
+                               true);
+      break;
+#endif  // defined(GOOGLE_CHROME_BUILD)
     case IDC_MEDIA_ROUTER_HELP:
       chrome::ShowSingletonTab(browser_, GURL(kCastHelpCenterPageUrl));
       base::RecordAction(base::UserMetricsAction(