[Media Router] Update Media Router flags post-launch.

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index 6d7a341356f00a8dc41166fe162794a465ba657c..35cb84132de1cc62bf91b21814252f9bcb89d284 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -621,6 +621,10 @@ const char kLoadComponentExtension[]        = "load-component-extension";
 // Loads an extension from the specified directory.
 const char kLoadExtension[]                 = "load-extension";
 
+// Loads the Media Router component extension on startup.
+const char kLoadMediaRouterComponentExtension[] =
+    "load-media-router-component-extension";
+
 // Makes Chrome default browser
 const char kMakeDefaultBrowser[]            = "make-default-browser";
 
@@ -637,9 +641,6 @@ extern const char kSecurityChipAnimationAll[] = "animate-all";
 // Forces the maximum disk space to be used by the media cache, in bytes.
 const char kMediaCacheSize[]                = "media-cache-size";
 
-// Enables Media Router.
-const char kMediaRouter[]                   = "media-router";
-
 // Enables the recording of metrics reports but disables reporting. In contrast
 // to kDisableMetrics, this executes all the code that a normal client would
 // use for reporting, except the report is dropped rather than sent to the