Remove unnecessary image downloading handler of notifications.

chrome/browser/ui/ash/screenshot_taker.cc

 // Copyright (c) 2012 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/ui/ash/screenshot_taker.h"
 
 #include <climits>
 #include <string>
 
 #include "ash/shell.h"
@@ skipping 144 matching lines @@
   }
 #endif
     content::BrowserThread::GetBlockingPool()->PostTask(
         FROM_HERE, base::Bind(
             &ReadFileAndCopyToClipboardLocal, screenshot_path_));
   }
   virtual bool HasClickedListener() override { return success_; }
   virtual std::string id() const override {
     return std::string(kNotificationId);
   }
-  virtual content::WebContents* GetWebContents() const override {
-    return NULL;
-  }
 
  private:
   virtual ~ScreenshotTakerNotificationDelegate() {}
 
   const bool success_;
   Profile* profile_;
   const base::FilePath screenshot_path_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenshotTakerNotificationDelegate);
 };
@@ skipping 448 matching lines @@
 }
 
 void ScreenshotTaker::SetScreenshotBasenameForTest(
     const std::string& basename) {
   screenshot_basename_for_test_ = basename;
 }
 
 void ScreenshotTaker::SetScreenshotProfileForTest(Profile* profile) {
   profile_for_test_ = profile;
 }