Introduce WebViewPermissionHelperDelegate.

extensions/browser/guest_view/web_view/web_view_permission_helper_delegate.h

+// 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.
+
+#ifndef EXTENSIONS_BROWSER_GUEST_VIEW_WEB_VIEW_WEB_VIWE_PERMISSION_HELPER_DELEGATE_H_
+#define EXTENSIONS_BROWSER_GUEST_VIEW_WEB_VIEW_WEB_VIWE_PERMISSION_HELPER_DELEGATE_H_
+
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_observer.h"
+#include "content/public/common/media_stream_request.h"
+
+namespace extensions {
+
+class WebViewPermissionHelperDelegate : public content::WebContentsObserver {

[Fady Samuel, 2014/08/13 23:24:50]

Short comment describing what this is and what this does.

[Xi Han, 2014/08/14 13:59:54]

Done.

+ public:
+  explicit WebViewPermissionHelperDelegate(content::WebContents* contents);
+  virtual ~WebViewPermissionHelperDelegate();
+
+  virtual void RequestMediaAccessPermission(
+      content::WebContents* source,
+      const content::MediaStreamRequest& request,
+      const content::MediaResponseCallback& callback) {}
+
+  virtual void CanDownload(
+      content::RenderViewHost* render_view_host,
+      const GURL& url,
+      const std::string& request_method,
+      const base::Callback<void(bool)>& callback) {}
+
+  virtual void RequestPointerLockPermission(
+      bool user_gesture,
+      bool last_unlocked_by_target,
+      const base::Callback<void(bool)>& callback) {}
+
+  // Requests Geolocation Permission from the embedder.
+  virtual void RequestGeolocationPermission(
+      int bridge_id,
+      const GURL& requesting_frame,
+      bool user_gesture,
+      const base::Callback<void(bool)>& callback) {}
+
+  virtual void CancelGeolocationPermissionRequest(int bridge_id) {}
+
+  virtual void RequestFileSystemPermission(
+      const GURL& url,
+      bool allowed_by_default,
+      const base::Callback<void(bool)>& callback) {}
+
+  // Called when file system access is requested by the guest content using the
+  // asynchronous HTML5 file system API. The request is plumbed through the
+  // <webview> permission request API. The request will be:
+  // - Allowed if the embedder explicitly allowed it.
+  // - Denied if the embedder explicitly denied.
+  // - Determined by the guest's content settings if the embedder does not
+  // perform an explicit action.
+  // If access was blocked due to the page's content settings,
+  // |blocked_by_policy| should be true, and this function should invoke
+  // OnContentBlocked.
+  virtual void FileSystemAccessedAsync(
+      int render_process_id,
+      int render_frame_id,
+      int request_id,
+      const GURL& url,
+      bool blocked_by_policy) {}
+
+  // Called when file system access is requested by the guest content using the
+  // synchronous HTML5 file system API in a worker thread or shared worker. The
+  // request is plumbed through the <webview> permission request API. The
+  // request will be:
+  // - Allowed if the embedder explicitly allowed it.
+  // - Denied if the embedder explicitly denied.
+  // - Determined by the guest's content settings if the embedder does not
+  // perform an explicit action.
+  // If access was blocked due to the page's content settings,
+  // |blocked_by_policy| should be true, and this function should invoke
+  // OnContentBlocked.
+  virtual void FileSystemAccessedSync(
+      int render_process_id,
+      int render_frame_id,
+      const GURL& url,
+      bool blocked_by_policy,
+      IPC::Message* reply_msg) {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(WebViewPermissionHelperDelegate);
+};
+
+}  // namespace extensions
+
+#endif  // EXTENSIONS_BROWSER_GUEST_VIEW_WEB_VIEW_WEB_VIWE_PERMISSION_HELPER_DELEGATE_H_