[Media Router] Add experiment control logic.

chrome/browser/ui/browser_commands.cc

Index: chrome/browser/ui/browser_commands.cc
diff --git a/chrome/browser/ui/browser_commands.cc b/chrome/browser/ui/browser_commands.cc
index f62796dec9f233d175f6a6b6d4e13c210f39521f..876bb58b4bc771d7d87768f6bf407881530b42ba 100644
--- a/chrome/browser/ui/browser_commands.cc
+++ b/chrome/browser/ui/browser_commands.cc
@@ -17,7 +17,6 @@
 #include "chrome/browser/devtools/devtools_window.h"
 #include "chrome/browser/dom_distiller/tab_utils.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
-#include "chrome/browser/media/router/media_router_dialog_controller.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/prefs/incognito_mode_prefs.h"
 #include "chrome/browser/profiles/profile.h"
@@ -111,6 +110,11 @@
 #include "components/rlz/rlz_tracker.h"
 #endif
 
+#if defined(ENABLE_MEDIA_ROUTER)
+#include "chrome/browser/media/router/media_router_dialog_controller.h"
+#include "chrome/browser/media/router/media_router_feature.h"
+#endif
+
 namespace {
 const char kOsOverrideForTabletSite[] = "Linux; Android 4.0.3";
 }
@@ -916,9 +920,12 @@ bool CanBasicPrint(Browser* browser) {
 }
 #endif  // ENABLE_BASIC_PRINTING
 
+#if defined(ENABLE_MEDIA_ROUTER)
 bool CanRouteMedia(Browser* browser) {
-  if (!switches::MediaRouterEnabled() || browser->profile()->IsOffTheRecord())
+  if (!media_router::MediaRouterEnabled() ||
+      browser->profile()->IsOffTheRecord()) {
     return false;
+  }
 
   // Do not allow user to open Media Router dialog when there is already an
   // active modal dialog. This avoids overlapping dialogs.
@@ -936,6 +943,7 @@ void RouteMedia(Browser* browser) {
 
   dialog_controller->ShowMediaRouterDialog();
 }
+#endif  // defined(ENABLE_MEDIA_ROUTER)
 
 void EmailPageLocation(Browser* browser) {
   content::RecordAction(UserMetricsAction("EmailPageLocation"));