Implementation of shared worker code path for WebView file system permission.

chrome/browser/renderer_host/chrome_render_message_filter.cc

Index: chrome/browser/renderer_host/chrome_render_message_filter.cc
diff --git a/chrome/browser/renderer_host/chrome_render_message_filter.cc b/chrome/browser/renderer_host/chrome_render_message_filter.cc
index 2df3e15d3dce55952ee734df11818d126bec3f7b..d29f383120d5fbc0fe2c65934772f244e9b544f6 100644
--- a/chrome/browser/renderer_host/chrome_render_message_filter.cc
+++ b/chrome/browser/renderer_host/chrome_render_message_filter.cc
@@ -209,14 +209,18 @@ void ChromeRenderMessageFilter::OnRequestFileSystemAccessSync(
           render_process_id_);
   if (is_web_view_guest) {
     // Record access to file system for potential display in UI.
-    BrowserThread::PostTask(BrowserThread::UI,
-                            FROM_HERE,
-                            base::Bind(&WebViewGuest::FileSystemAccessedSync,
-                                       render_process_id_,
-                                       render_frame_id,
-                                       origin_url,
-                                       !allowed,
-                                       reply_msg));
+    BrowserThread::PostTask(
+        BrowserThread::UI,
+        FROM_HERE,
+        base::Bind(&WebViewGuest::FileSystemAccessedSync,
+                   render_process_id_,
+                   render_frame_id,
+                   origin_url,
+                   !allowed,
+                   base::Bind(&ChromeRenderMessageFilter::
+                                  OnRequestFileSystemAccessSyncResponse,
+                              base::Unretained(this),
+                              reply_msg)));
     return;
   }
 #endif
@@ -234,6 +238,14 @@ void ChromeRenderMessageFilter::OnRequestFileSystemAccessSync(
                  !allowed));
 }
 
+void ChromeRenderMessageFilter::OnRequestFileSystemAccessSyncResponse(
+    IPC::Message* reply_msg,
+    bool allowed) {
+  ChromeViewHostMsg_RequestFileSystemAccessSync::WriteReplyParams(reply_msg,
+                                                                  allowed);
+  Send(reply_msg);
+}
+
 void ChromeRenderMessageFilter::OnRequestFileSystemAccessAsync(
     int render_frame_id,
     int request_id,
@@ -269,10 +281,10 @@ void ChromeRenderMessageFilter::OnRequestFileSystemAccessAsync(
       BrowserThread::UI,
       FROM_HERE,
       base::Bind(&TabSpecificContentSettings::FileSystemAccessed,
-                render_process_id_,
-                render_frame_id,
-                origin_url,
-                !allowed));
+                 render_process_id_,
+                 render_frame_id,
+                 origin_url,
+                 !allowed));
 }
 
 void ChromeRenderMessageFilter::OnAllowIndexedDB(int render_frame_id,