Move Media Router resource files into .grdp.

This moves the current Media Router resource files from the general browser_resources.grd to a separate .grdp file. Future files will also be added here.

BUG=464222

Review URL: https://codereview.chromium.org/1065773002

Cr-Commit-Position: refs/heads/master@{#324057}
diff --git a/chrome/browser/browser_resources.grd b/chrome/browser/browser_resources.grd
index 6a54ebf..acfff9b 100644
--- a/chrome/browser/browser_resources.grd
+++ b/chrome/browser/browser_resources.grd
@@ -449,29 +449,7 @@
       <include name="IDR_MD_SETTINGS_UI_HTML" file="resources\md_settings\md_settings.html" type="BINDATA" />
       <include name="IDR_MD_SETTINGS_UI_CSS" file="resources\md_settings\md_settings.css" type="BINDATA" />
       <if expr="enable_media_router">
-        <include name="IDR_MEDIA_ROUTER_DATA_JS" file="resources\media_router\media_router_data.js" type="BINDATA" />
-        <include name="IDR_CAST_MODE_PICKER_HTML" file="resources\media_router\elements\cast_mode_picker\cast_mode_picker.html" type="BINDATA" />
-        <include name="IDR_CAST_MODE_PICKER_CSS" file="resources\media_router\elements\cast_mode_picker\cast_mode_picker.css" type="BINDATA" />
-        <include name="IDR_CAST_MODE_PICKER_JS" file="resources\media_router\elements\cast_mode_picker\cast_mode_picker.js" type="BINDATA" />
-        <include name="IDR_ISSUE_BANNER_HTML" file="resources\media_router\elements\issue_banner\issue_banner.html" type="BINDATA" />
-        <include name="IDR_ISSUE_BANNER_JS" file="resources\media_router\elements\issue_banner\issue_banner.js" type="BINDATA" />
-        <include name="IDR_ISSUE_BANNER_CSS" file="resources\media_router\elements\issue_banner\issue_banner.css" type="BINDATA" />
-        <include name="IDR_MEDIA_ROUTER_CHROMECAST_ICON" file="resources\media_router\elements\icon\chromecast-icon.png" type="BINDATA" />
-        <include name="IDR_MEDIA_ROUTER_CHROMECAST_2X_ICON" file="resources\media_router\elements\icon\chromecast-icon2x.png" type="BINDATA" />
-        <include name="IDR_CLOSE_GRAY_ICON" file="resources\media_router\elements\icon\close-gray.png" type="BINDATA" />
-        <include name="IDR_CLOSE_GRAY_2X_ICON" file="resources\media_router\elements\icon\close-gray2x.png" type="BINDATA" />
-        <include name="IDR_DROP_DOWN_ARROW_ICON" file="resources\media_router\elements\icon\drop-down-arrow.png" type="BINDATA" />
-        <include name="IDR_DROP_DOWN_ARROW_2X_ICON" file="resources\media_router\elements\icon\drop-down-arrow2x.png" type="BINDATA" />
-        <include name="IDR_DROP_DOWN_ARROW_HOVER_ICON" file="resources\media_router\elements\icon\drop-down-arrow-hover.png" type="BINDATA" />
-        <include name="IDR_DROP_DOWN_ARROW_HOVER_2X_ICON" file="resources\media_router\elements\icon\drop-down-arrow-hover2x.png" type="BINDATA" />
-        <include name="IDR_DROP_DOWN_ARROW_SHOWING_ICON" file="resources\media_router\elements\icon\drop-down-arrow-showing.png" type="BINDATA" />
-        <include name="IDR_DROP_DOWN_ARROW_SHOWING_2X_ICON" file="resources\media_router\elements\icon\drop-down-arrow-showing2x.png" type="BINDATA" />
-        <include name="IDR_MEDIA_ROUTER_GENERIC_DEVICE_ICON" file="resources\media_router\elements\icon\generic-device.png" type="BINDATA" />
-        <include name="IDR_MEDIA_ROUTER_GENERIC_DEVICE_2X_ICON" file="resources\media_router\elements\icon\generic-device2x.png" type="BINDATA" />
-        <include name="IDR_MEDIA_ROUTER_HANGOUTS_ICON" file="resources\media_router\elements\icon\hangouts-icon.png" type="BINDATA" />
-        <include name="IDR_MEDIA_ROUTER_HANGOUTS_2X_ICON" file="resources\media_router\elements\icon\hangouts-icon2x.png" type="BINDATA" />
-        <include name="IDR_SAD_FACE_ICON" file="resources\media_router\elements\icon\sad-face.png" type="BINDATA" />
-        <include name="IDR_SAD_FACE_2X_ICON" file="resources\media_router\elements\icon\sad-face2x.png" type="BINDATA" />
+        <part file="media_router_resources.grdp" />
       </if>
     </includes>
   </release>