[Media Router] Move media_router.mojom to c/b/media/router/mojo

extensions/renderer/resources/extensions_renderer_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <grit latest_public_release="0" current_release="1">
   <outputs>
     <output filename="grit/extensions_renderer_resources.h" type="rc_header">
       <emit emit_type='prepend'></emit>
     </output>
     <output filename="extensions_renderer_resources.pak" type="data_package" />
   </outputs>
   <release seq="1">
     <includes>
@@ skipping 82 matching lines @@
 
       <!-- Platform app support. -->
       <include name="IDR_PLATFORM_APP_CSS" file="platform_app.css" type="BINDATA" />
       <include name="IDR_PLATFORM_APP_JS" file="platform_app.js" type="BINDATA" />
 
       <!-- Extension styles. -->
       <include name="IDR_EXTENSION_FONTS_CSS" file="extension_fonts.css" type="BINDATA"/>
 
       <!-- Media Router Mojo service and bindings. -->
       <if expr="enable_media_router">
-        <include name="IDR_MEDIA_ROUTER_MOJOM_JS" file="${mojom_root}\chrome\browser\media\router\media_router.mojom.js" use_base_dir="false" type="BINDATA" />
+        <include name="IDR_MEDIA_ROUTER_MOJOM_JS" file="${mojom_root}\chrome\browser\media\router\mojo\media_router.mojom.js" use_base_dir="false" type="BINDATA" />
         <include name="IDR_MEDIA_ROUTER_BINDINGS_JS" file="media_router_bindings.js" type="BINDATA" />
       </if>
     </includes>
     <structures>
       <!-- Extension styles. -->
       <structure name="IDR_EXTENSION_CSS" file="extension.css" type="chrome_html" flattenhtml="true" />
     </structures>
   </release>
 </grit>