Prompt user for file access permission before download starts

content/browser/android/download_controller_android_impl.h

Index: content/browser/android/download_controller_android_impl.h
diff --git a/content/browser/android/download_controller_android_impl.h b/content/browser/android/download_controller_android_impl.h
index fad2320e5d21c816e53d8bb373b44234c1773425..4cf73e79eb9e2a49682ab32159db9d7c5c901332 100644
--- a/content/browser/android/download_controller_android_impl.h
+++ b/content/browser/android/download_controller_android_impl.h
@@ -54,6 +54,12 @@ class DownloadControllerAndroidImpl : public DownloadControllerAndroid,
   // Removes a deferred download from |deferred_downloads_|.
   void CancelDeferredDownload(DeferredDownloadObserver* observer);
 
+  // DownloadControllerAndroid implementation.
+  bool RequireUserPermissionPrompt(WebContents* web_contents) override;
+  void PromptUserForPermission(
+      WebContents* web_contents,
+      const UserPermissionPromptCallback& callback) override;
+
  private:
   // Used to store all the information about an Android download.
   struct DownloadInfoAndroid {
@@ -81,6 +87,11 @@ class DownloadControllerAndroidImpl : public DownloadControllerAndroid,
   DownloadControllerAndroidImpl();
   ~DownloadControllerAndroidImpl() override;
 
+  // Helper method for implementing PromptUserForPermission.
+  void PromptUserForPermissionInternal(
+        WebContents* download_item,

[Ted C, 2015/07/06 20:03:39]

this and the following line are indented 2 too much

[qinmin, 2015/07/06 20:36:02]

Done.

+        const UserPermissionPromptCallback& callback);
+
   // DownloadControllerAndroid implementation.
   void CreateGETDownload(int render_process_id,
                          int render_view_id,
@@ -116,6 +127,10 @@ class DownloadControllerAndroidImpl : public DownloadControllerAndroid,
   void StartAndroidDownload(int render_process_id,
                             int render_view_id,
                             const DownloadInfoAndroid& info);
+  void StartAndroidDownloadInternal(int render_process_id,
+                                    int render_view_id,
+                                    const DownloadInfoAndroid& info,
+                                    bool allowed);
 
   // The download item contains dangerous file types.
   void OnDangerousDownload(DownloadItem *item);