Wire up the deleteFileSystem operation.

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index c9bc768932a8039e6680f35b27636955c4c28129..457071e168abfdf761d90c97d9268a524798249c 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -3669,6 +3669,25 @@ void RenderViewImpl::openFileSystem(
       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->didSucceed();
+    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,