Add warning icon to media throttle info bar to make it consistent with others

chrome/browser/android/media/media_throttle_infobar_delegate.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/android/media/media_throttle_infobar_delegate.h"
 
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/infobars/core/infobar.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 34 matching lines @@
 
 MediaThrottleInfoBarDelegate*
     MediaThrottleInfoBarDelegate::AsMediaThrottleInfoBarDelegate() {
   return this;
 }
 
 base::string16 MediaThrottleInfoBarDelegate::GetMessageText() const {
   return l10n_util::GetStringUTF16(IDS_MEDIA_THROTTLE_INFOBAR_TEXT);
 }
 
+int MediaThrottleInfoBarDelegate::GetIconId() const {
+  return IDR_INFOBAR_WARNING;
+}
+
 base::string16 MediaThrottleInfoBarDelegate::GetButtonLabel(
     InfoBarButton button) const {
   return l10n_util::GetStringUTF16((button == BUTTON_OK) ?
       IDS_MEDIA_THROTTLE_INFOBAR_BLOCK_BUTTON :
       IDS_MEDIA_THROTTLE_INFOBAR_ALLOW_BUTTON);
 }
 
 bool MediaThrottleInfoBarDelegate::Accept() {
   decode_granted_callback_.Run(false);
   return true;
 }
 
 bool MediaThrottleInfoBarDelegate::Cancel() {
   decode_granted_callback_.Run(true);
   return true;
 }
 
 void MediaThrottleInfoBarDelegate::InfoBarDismissed() {
   decode_granted_callback_.Run(false);
 }