[Media Router] Enable MR by default now that it is at 100% in stable.

chrome/browser/ui/toolbar/toolbar_actions_model_unittest.cc

Index: chrome/browser/ui/toolbar/toolbar_actions_model_unittest.cc
diff --git a/chrome/browser/ui/toolbar/toolbar_actions_model_unittest.cc b/chrome/browser/ui/toolbar/toolbar_actions_model_unittest.cc
index a4bbd98b39ed1fe0cd82031bee7b6399578d1b0e..e273fb1bfd3d682cc0d38154c60a9496ba67f9d6 100644
--- a/chrome/browser/ui/toolbar/toolbar_actions_model_unittest.cc
+++ b/chrome/browser/ui/toolbar/toolbar_actions_model_unittest.cc
@@ -902,6 +902,8 @@ TEST_F(ToolbarActionsModelUnitTest, ActionsToolbarSizeAfterPrefChange) {
 // Test that, in the absence of the extension-action-redesign switch, the
 // model only contains extensions with browser actions and component actions.
 TEST_F(ToolbarActionsModelUnitTest, TestToolbarExtensionTypesDisabledSwitch) {
+  extensions::FeatureSwitch::ScopedOverride enable_media_router(
+      extensions::FeatureSwitch::media_router(), false);
   extensions::FeatureSwitch::ScopedOverride enable_redesign(
       extensions::FeatureSwitch::extension_action_redesign(), false);
   Init();
@@ -970,6 +972,8 @@ TEST_F(ToolbarActionsModelUnitTest, TestToolbarExtensionTypesEnabledSwitch) {
 // Test that hiding actions on the toolbar results in their removal from the
 // model when the redesign switch is not enabled.
 TEST_F(ToolbarActionsModelUnitTest, ActionsToolbarActionsVisibilityNoSwitch) {
+  extensions::FeatureSwitch::ScopedOverride enable_media_router(
+      extensions::FeatureSwitch::media_router(), false);
   extensions::FeatureSwitch::ScopedOverride enable_redesign(
       extensions::FeatureSwitch::extension_action_redesign(), false);
   Init();