[Extensions] Add more bindings access checks

chrome/renderer/extensions/file_manager_private_custom_bindings.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 "chrome/renderer/extensions/file_manager_private_custom_bindings.h"
 
 #include <string>
 
 #include "base/logging.h"
+#include "chrome/renderer/extensions/file_browser_handler_custom_bindings.h"
 #include "extensions/renderer/script_context.h"
+#include "extensions/renderer/v8_helpers.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/web/WebDOMFileSystem.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 
 namespace extensions {
 
 FileManagerPrivateCustomBindings::FileManagerPrivateCustomBindings(
     ScriptContext* context)
     : ObjectBackedNativeHandler(context) {
+  RouteFunction("GetFileSystem", "fileManagerPrivate",
+                base::Bind(&FileManagerPrivateCustomBindings::GetFileSystem,
+                           base::Unretained(this)));
   RouteFunction(
-      "GetFileSystem",
-       base::Bind(&FileManagerPrivateCustomBindings::GetFileSystem,
-                  base::Unretained(this)));
+      "GetExternalFileEntry", "fileManagerPrivate",
+      base::Bind(&FileManagerPrivateCustomBindings::GetExternalFileEntry,
+                 base::Unretained(this)));
+  RouteFunction("GetEntryURL", "fileManagerPrivate",
+                base::Bind(&FileManagerPrivateCustomBindings::GetEntryURL,
+                           base::Unretained(this)));
 }
 
 void FileManagerPrivateCustomBindings::GetFileSystem(
     const v8::FunctionCallbackInfo<v8::Value>& args) {
   DCHECK(args.Length() == 2);
   DCHECK(args[0]->IsString());
   DCHECK(args[1]->IsString());
   std::string name(*v8::String::Utf8Value(args[0]));
   std::string root_url(*v8::String::Utf8Value(args[1]));
 
   blink::WebLocalFrame* webframe =
       blink::WebLocalFrame::frameForContext(context()->v8_context());
   DCHECK(webframe);
   args.GetReturnValue().Set(
       blink::WebDOMFileSystem::create(webframe,
                                       blink::WebFileSystemTypeExternal,
                                       blink::WebString::fromUTF8(name),
                                       GURL(root_url))
           .toV8Value(context()->v8_context()->Global(), args.GetIsolate()));
 }
 
+void FileManagerPrivateCustomBindings::GetExternalFileEntry(
+    const v8::FunctionCallbackInfo<v8::Value>& args) {
+  FileBrowserHandlerCustomBindings::GetExternalFileEntry(args, context());
+}
+
+void FileManagerPrivateCustomBindings::GetEntryURL(
+    const v8::FunctionCallbackInfo<v8::Value>& args) {
+  CHECK(args.Length() == 1);
+  CHECK(args[0]->IsObject());
+  const blink::WebURL& url =
+      blink::WebDOMFileSystem::createFileSystemURL(args[0]);
+  args.GetReturnValue().Set(v8_helpers::ToV8StringUnsafe(
+      args.GetIsolate(), url.string().utf8().c_str()));
+}
+
 }  // namespace extensions