Media Controls: Remove duplicate resources

Now that MediaControlPainter has been removed we don't need
to directly package the images with Chrome (as they are included
in the CSS file). This removes the images from being packaged
with Chrome.

BUG=770756

Change-Id: Ib9dc22c57efe0cef2bb13cd745eaecce7d955c78
Reviewed-on: https://chromium-review.googlesource.com/698084Reviewed-by: Philip Jägenstedt <foolip@chromium.org>
Commit-Queue: Becca Hughes <beccahughes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#506370}

third_party/WebKit/Source/modules/media_controls/resources/media_controls_resources.grd

@@ -9,27 +9,6 @@
   </outputs>
   <release seq="1">
     <structures fallback_to_low_resolution="true">
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_PAUSE_BUTTON" file="legacy/mediaplayer_pause.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_PLAY_BUTTON" file="legacy/mediaplayer_play.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_SOUND_NOT_MUTED_BUTTON" file="legacy/mediaplayer_sound_not_muted.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_SOUND_MUTED_BUTTON" file="legacy/mediaplayer_sound_muted.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_SLIDER_THUMB" file="legacy/mediaplayer_slider_thumb.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_VOLUME_SLIDER_THUMB" file="legacy/mediaplayer_volume_slider_thumb.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_CLOSEDCAPTION_BUTTON" file="legacy/mediaplayer_closedcaption.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_DISABLED" file="legacy/mediaplayer_closedcaption_disabled.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_ENTER_FULLSCREEN_BUTTON" file="legacy/mediaplayer_enter_fullscreen.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_EXIT_FULLSCREEN_BUTTON" file="legacy/mediaplayer_exit_fullscreen.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_CAST_BUTTON_OFF" file="legacy/mediaplayer_cast_off.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_CAST_BUTTON_ON" file="legacy/mediaplayer_cast_on.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_OVERLAY_CAST_BUTTON_OFF" file="legacy/mediaplayer_overlay_cast_off.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_OVERLAY_CAST_BUTTON_ON" file="legacy/mediaplayer_overlay_cast_on.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_OVERLAY_PLAY_BUTTON" file="legacy/mediaplayer_overlay_play.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIA_REMOTING_CAST_ICON" file="legacy/mediaremoting_cast.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_TRACKSELECTION_CHECKMARK" file="legacy/mediaplayer_trackselection_checkmark.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_CLOSEDCAPTIONS_ICON" file="legacy/mediaplayer_closedcaptions_icon.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_OVERFLOW_MENU_ICON" file="legacy/mediaplayer_overflow_menu.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_DOWNLOAD_ICON" file="legacy/mediaplayer_download.png" />
-      <structure type="chrome_scaled_image" name="IDR_LEGACY_MEDIAPLAYER_SUBTITLES_ICON" file="legacy/mediaplayer_subtitles_icon.png" />
       <structure type="chrome_html" name="IDR_UASTYLE_LEGACY_MEDIA_CONTROLS_CSS" file="legacyMediaControls.css" flattenhtml="true" compress="gzip" />
       <structure type="chrome_html" name="IDR_UASTYLE_MODERN_MEDIA_CONTROLS_CSS" file="modernMediaControls.css" flattenhtml="true" compress="gzip" />
     </structures>