Lazy load chrome.* APIs

chrome/renderer/extensions/file_browser_handler_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_browser_handler_custom_bindings.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "grit/renderer_resources.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebFileSystem.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebString.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
 
-namespace {
+namespace extensions {
 
-v8::Handle<v8::Value> GetExternalFileEntry(const v8::Arguments& args) {
+FileBrowserHandlerCustomBindings::FileBrowserHandlerCustomBindings(
+    Dispatcher* dispatcher, v8::Handle<v8::Context> context)
+    : ChromeV8Extension(dispatcher, context) {
+  RouteFunction(
+      "GetExternalFileEntry",
+      base::Bind(&FileBrowserHandlerCustomBindings::GetExternalFileEntry,
+                 base::Unretained(this)));
+}
+
+v8::Handle<v8::Value> FileBrowserHandlerCustomBindings::GetExternalFileEntry(
+    const v8::Arguments& args) {
   // TODO(zelidrag): Make this magic work on other platforms when file browser
   // matures enough on ChromeOS.
 #if defined(OS_CHROMEOS)
     CHECK(args.Length() == 1);
     CHECK(args[0]->IsObject());
     v8::Local<v8::Object> file_def = args[0]->ToObject();
     std::string file_system_name(
         *v8::String::Utf8Value(file_def->Get(
             v8::String::New("fileSystemName"))));
     std::string file_system_path(
         *v8::String::Utf8Value(file_def->Get(
             v8::String::New("fileSystemRoot"))));
     std::string file_full_path(
         *v8::String::Utf8Value(file_def->Get(
             v8::String::New("fileFullPath"))));
     bool is_directory =
         file_def->Get(v8::String::New("fileIsDirectory"))->ToBoolean()->Value();
-    WebKit::WebFrame* webframe = WebKit::WebFrame::frameForCurrentContext();
+    WebKit::WebFrame* webframe =
+        WebKit::WebFrame::frameForContext(v8_context());
     return webframe->createFileEntry(
         WebKit::WebFileSystem::TypeExternal,
         WebKit::WebString::fromUTF8(file_system_name.c_str()),
         WebKit::WebString::fromUTF8(file_system_path.c_str()),
         WebKit::WebString::fromUTF8(file_full_path.c_str()),
         is_directory);
 #else
     return v8::Undefined();
 #endif
 }
 
-}  // namespace
-
-namespace extensions {
-
-FileBrowserHandlerCustomBindings::FileBrowserHandlerCustomBindings()
-    : ChromeV8Extension(NULL) {
-  RouteStaticFunction("GetExternalFileEntry", &GetExternalFileEntry);
-}
-
-
 }  // namespace extensions