Wire up the deleteFileSystem operation.

content/renderer/render_view_impl.cc

 // 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.
 
 #include "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <string>
 #include <vector>
@@ skipping 3651 matching lines @@
     // Unique origins cannot store persistent state.
     callbacks->didFail(WebKit::WebFileErrorAbort);
     return;
   }
 
   ChildThread::current()->file_system_dispatcher()->OpenFileSystem(
       GURL(origin.toString()), static_cast<fileapi::FileSystemType>(type),
       size, create, new WebFileSystemCallbackDispatcher(callbacks));
 }
 
+void RenderViewImpl::deleteFileSystem(
+    WebFrame* frame,
+    WebFileSystem::Type type ,
+    WebFileSystemCallbacks* callbacks) {
+  DCHECK(callbacks);
+
+  WebSecurityOrigin origin = frame->document().securityOrigin();
+  if (origin.isUnique()) {
+    // Unique origins cannot store persistent state.
+    callbacks->didFail(WebKit::WebFileErrorAbort);

[tzik, 2012/07/27 17:53:47]

I think we can call didSucceed here since we have no data to remove already.

[nhiroki (google), 2012/07/27 18:36:19]

Done.

+    return;
+  }
+
+  ChildThread::current()->file_system_dispatcher()->DeleteFileSystem(
+      GURL(origin.toString()),
+      static_cast<fileapi::FileSystemType>(type),
+      new WebFileSystemCallbackDispatcher(callbacks));
+}
+
 void RenderViewImpl::queryStorageUsageAndQuota(
     WebFrame* frame,
     WebStorageQuotaType type,
     WebStorageQuotaCallbacks* callbacks) {
   DCHECK(frame);
   WebSecurityOrigin origin = frame->document().securityOrigin();
   if (origin.isUnique()) {
     // Unique origins cannot store persistent state.
     callbacks->didFail(WebKit::WebStorageQuotaErrorAbort);
     return;
@@ skipping 2031 matching lines @@
 bool RenderViewImpl::WebWidgetHandlesCompositorScheduling() const {
   return !!RenderThreadImpl::current()->compositor_thread();
 }
 
 void RenderViewImpl::OnJavaBridgeInit() {
   DCHECK(!java_bridge_dispatcher_);
 #if defined(ENABLE_JAVA_BRIDGE)
   java_bridge_dispatcher_ = new JavaBridgeDispatcher(this);
 #endif
 }