Remove AppDelegate::GetAppDefaultIcon

extensions/shell/browser/shell_app_delegate.cc

 // Copyright 2014 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 "extensions/shell/browser/shell_app_delegate.h"
 
 #include "extensions/common/constants.h"
 #include "extensions/shell/browser/media_capture_util.h"
 
 namespace extensions {
@@ skipping 57 matching lines @@
     content::MediaStreamType type,
     const Extension* extension) {
   media_capture_util::VerifyMediaAccessPermission(type, extension);
   return true;
 }
 
 int ShellAppDelegate::PreferredIconSize() {
   return extension_misc::EXTENSION_ICON_SMALL;
 }
 
-gfx::ImageSkia ShellAppDelegate::GetAppDefaultIcon() {
-  NOTIMPLEMENTED();
-  return gfx::ImageSkia();
-}
-
 void ShellAppDelegate::SetWebContentsBlocked(
     content::WebContents* web_contents,
     bool blocked) {
   NOTIMPLEMENTED();
 }
 
 bool ShellAppDelegate::IsWebContentsVisible(
     content::WebContents* web_contents) {
   return true;
 }
 
 void ShellAppDelegate::SetTerminatingCallback(const base::Closure& callback) {
   // TODO(jamescook): Should app_shell continue to close the app window
   // manually or should it use a browser termination callback like Chrome?
   NOTIMPLEMENTED();
 }
 
 }  // namespace extensions