Plumb file system permission into WebviewGuest.

chrome/browser/guest_view/web_view/web_view_guest.h

Index: chrome/browser/guest_view/web_view/web_view_guest.h
diff --git a/chrome/browser/guest_view/web_view/web_view_guest.h b/chrome/browser/guest_view/web_view/web_view_guest.h
index f7b6d2ba0a7ee606a241e1cb30202a32031a3d32..d6c0ab3e33aa24d99b094af1cf986ed47306a93b 100644
--- a/chrome/browser/guest_view/web_view/web_view_guest.h
+++ b/chrome/browser/guest_view/web_view/web_view_guest.h
@@ -16,6 +16,7 @@
 #include "chrome/common/extensions/api/webview.h"
 #include "content/public/browser/javascript_dialog_manager.h"
 #include "content/public/browser/notification_registrar.h"
+#include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "third_party/WebKit/public/web/WebFindOptions.h"
 
@@ -182,6 +183,14 @@ class WebViewGuest : public GuestView<WebViewGuest>,
 
   void CancelGeolocationPermissionRequest(int bridge_id);
 
+  void RequestFileSystemPermission(const GURL& url,
+                                   const base::Callback<void(bool)>& callback);
+
+  void OnWebViewFileSystemPermissionResponse(
+      const base::Callback<void(bool)>& callback,
+      bool allow,
+      const std::string& user_input);
+
   void OnWebViewMediaPermissionResponse(
       const content::MediaStreamRequest& request,
       const content::MediaResponseCallback& callback,
@@ -243,6 +252,18 @@ class WebViewGuest : public GuestView<WebViewGuest>,
     return script_executor_.get();
   }
 
+  static void FileSystemAccessedAsync(int render_process_id,
+                                      int render_frame_id,
+                                      int request_id,
+                                      const GURL& url,
+                                      bool blocked_by_policy);
+
+  static void FileSystemAccessedSyncDelayReply(int render_process_id,
+                                               int render_frame_id,
+                                               const GURL& url,
+                                               IPC::Message* reply_msg,
+                                               bool blocked_by_policy);
+
  private:
   virtual ~WebViewGuest();
 
@@ -265,6 +286,21 @@ class WebViewGuest : public GuestView<WebViewGuest>,
   static scoped_ptr<base::ListValue> MenuModelToValue(
       const ui::SimpleMenuModel& menu_model);
 
+  static void FileSystemAccessedAsyncInternal(int render_process_id,
+                                              int render_frame_id,
+                                              int request_id,
+                                              const GURL& url,
+                                              bool blocked_by_policy);
+
+  static void FileSystemAccessedSyncDelayReplyInternal(int render_process_id,
+                                                       int render_frame_id,
+                                                       const GURL& url,
+                                                       IPC::Message* reply_msg,
+                                                       bool blocked_by_policy);
+
+  static WebViewGuest* GetWebViewGuest(int render_process_id,
+                                       int render_frame_id);
+
   // WebContentsObserver implementation.
   virtual void DidCommitProvisionalLoadForFrame(
       int64 frame_id,