[Media Router] Set timeout for route creation.

chrome/app/media_router_strings.grdp

Index: chrome/app/media_router_strings.grdp
diff --git a/chrome/app/media_router_strings.grdp b/chrome/app/media_router_strings.grdp
index 254c353a5160105366e887aaec771bbec9ed52ea..ae39e3c75fbdfe7129509226f0fa1bf0f4eb8790 100644
--- a/chrome/app/media_router_strings.grdp
+++ b/chrome/app/media_router_strings.grdp
@@ -54,6 +54,12 @@
   </message>
 
   <!-- Issue Messaging -->
+  <message name="IDS_MEDIA_ROUTER_ISSUE_CREATE_ROUTE_TIMEOUT" desc="Title of an issue to show when the user attempts to create a route and the Media Router times out while waiting for a route creation response.">
+    <ph name="HOST_NAME">$1<ex>youtube.com</ex></ph> not responding. Unable to cast.
+  </message>
+  <message name="IDS_MEDIA_ROUTER_ISSUE_CREATE_ROUTE_TIMEOUT_FOR_TAB" desc="Title of an issue to show when the user attempts to create a route to mirror a tab and the Media Router times out while waiting for a route creation response.">
+    Tab not responding. Unable to cast.
+  </message>
   <message name="IDS_MEDIA_ROUTER_ISSUE_PENDING_ROUTE" desc="Title of an issue to show when the user attempts to create more than one route at a time.">
     Only one session can be created at a time.
   </message>