[Media Router] Add experiment control logic.

chrome/browser/renderer_context_menu/render_view_context_menu.cc

Index: chrome/browser/renderer_context_menu/render_view_context_menu.cc
diff --git a/chrome/browser/renderer_context_menu/render_view_context_menu.cc b/chrome/browser/renderer_context_menu/render_view_context_menu.cc
index 753cd8a1a231a465ef133e9a3c782c5c0c9986cc..c66ba8997fbe9a11eb1fdf90f7e8112d7b03deb9 100644
--- a/chrome/browser/renderer_context_menu/render_view_context_menu.cc
+++ b/chrome/browser/renderer_context_menu/render_view_context_menu.cc
@@ -123,6 +123,10 @@
 #endif  // defined(ENABLE_PRINT_PREVIEW)
 #endif  // defined(ENABLE_PRINTING)
 
+#if defined(ENABLE_MEDIA_ROUTER)
+#include "chrome/browser/media/router/media_router_feature.h"
+#endif  // defined(ENABLE_MEDIA_ROUTER)
+
 using base::UserMetricsAction;
 using blink::WebContextMenuData;
 using blink::WebMediaPlayerAction;
@@ -954,9 +958,13 @@ void RenderViewContextMenu::AppendPrintItem() {
 }
 
 void RenderViewContextMenu::AppendMediaRouterItem() {
-  if (switches::MediaRouterEnabled() && !browser_context_->IsOffTheRecord())
+#if defined(ENABLE_MEDIA_ROUTER)
+  if (media_router::MediaRouterEnabled() &&
+      !browser_context_->IsOffTheRecord()) {
     menu_model_.AddItemWithStringId(IDC_ROUTE_MEDIA,
                                     IDS_MEDIA_ROUTER_MENU_ITEM_TITLE);
+  }
+#endif  // defined(ENABLE_MEDIA_ROUTER)
 }
 
 void RenderViewContextMenu::AppendRotationItems() {
@@ -1415,7 +1423,8 @@ bool RenderViewContextMenu::IsCommandIdEnabled(int id) const {
       return true;
 
     case IDC_ROUTE_MEDIA: {
-      DCHECK(switches::MediaRouterEnabled());
+#if defined(ENABLE_MEDIA_ROUTER)
+      DCHECK(media_router::MediaRouterEnabled());
 
       // Disable the command if there is an active modal dialog.
       Browser* browser =
@@ -1432,6 +1441,9 @@ bool RenderViewContextMenu::IsCommandIdEnabled(int id) const {
           web_modal::WebContentsModalDialogManager::FromWebContents(
               web_contents);
       return !manager || !manager->IsDialogActive();
+#else
+      return false;

[msw, 2015/10/23 20:18:42]

nit: add NOTREACHED(); in this block?

[imcheng, 2015/10/23 21:39:26]

Done.

+#endif  // defined(ENABLE_MEDIA_ROUTER)
     }
 
     default:
@@ -1713,7 +1725,8 @@ void RenderViewContextMenu::ExecuteCommand(int id, int event_flags) {
     }
 
     case IDC_ROUTE_MEDIA: {
-      DCHECK(switches::MediaRouterEnabled());
+#if defined(ENABLE_MEDIA_ROUTER)
+      DCHECK(media_router::MediaRouterEnabled());
 
       Browser* browser =
           chrome::FindBrowserWithWebContents(source_web_contents_);
@@ -1727,6 +1740,7 @@ void RenderViewContextMenu::ExecuteCommand(int id, int event_flags) {
         return;
 
       dialog_controller->ShowMediaRouterDialog();
+#endif  // defined(ENABLE_MEDIA_ROUTER)

[msw, 2015/10/23 20:18:43]

nit: add an else block with NOTREACHED();?

[imcheng, 2015/10/23 21:39:26]

Done.

       break;
     }