Return false in AwWebContentsDelegate::CanDownload

android_webview/browser/aw_download_manager_delegate.h

 // 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.
 
 #ifndef ANDROID_WEBVIEW_BROWSER_AW_DOWNLOAD_MANAGER_DELEGATE_H_
 #define ANDROID_WEBVIEW_BROWSER_AW_DOWNLOAD_MANAGER_DELEGATE_H_
 
 #include "content/public/browser/download_manager_delegate.h"
 
-namespace content {
-class DownloadItem;
-}  // namespace content
-
 namespace android_webview {
 
 // Android WebView does not use Chromium downloads, so implement methods here to
 // unconditionally cancel the download.
 class AwDownloadManagerDelegate : public content::DownloadManagerDelegate {
  public:
   virtual ~AwDownloadManagerDelegate();
 
   // content::DownloadManagerDelegate implementation.
   virtual bool DetermineDownloadTarget(
       content::DownloadItem* item,
       const content::DownloadTargetCallback& callback) OVERRIDE;
   virtual bool ShouldCompleteDownload(
       content::DownloadItem* item,
       const base::Closure& complete_callback) OVERRIDE;
   virtual bool ShouldOpenDownload(
       content::DownloadItem* item,
       const content::DownloadOpenDelayedCallback& callback) OVERRIDE;
 };
 
-}  // anemspace android_webview
+}  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_AW_DOWNLOAD_MANAGER_DELEGATE_H_