Begin to enable extension APIs in Extension Service Worker.

extensions/renderer/script_context.cc

 // Copyright 2014 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 "extensions/renderer/script_context.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 237 matching lines @@
   return GetContextTypeDescriptionString(context_type_);
 }
 
 std::string ScriptContext::GetEffectiveContextTypeDescription() const {
   DCHECK(thread_checker_.CalledOnValidThread());
   return GetContextTypeDescriptionString(effective_context_type_);
 }
 
 bool ScriptContext::IsAnyFeatureAvailableToContext(const Feature& api) {
   DCHECK(thread_checker_.CalledOnValidThread());
+  // TODO(lazyboy): Decide what we should do for SERVICE_WORKER_CONTEXT.
+  GURL url = context_type() == Feature::SERVICE_WORKER_CONTEXT
+                 ? url_
+                 : GetDataSourceURLForFrame(web_frame());
   return ExtensionAPI::GetSharedInstance()->IsAnyFeatureAvailableToContext(
-      api, extension(), context_type(), GetDataSourceURLForFrame(web_frame()));
+      api, extension(), context_type(), url);
 }
 
 // static
 GURL ScriptContext::GetDataSourceURLForFrame(const blink::WebFrame* frame) {
   // Normally we would use frame->document().url() to determine the document's
   // URL, but to decide whether to inject a content script, we use the URL from
   // the data source. This "quirk" helps prevents content scripts from
   // inadvertently adding DOM elements to the compose iframe in Gmail because
   // the compose iframe's dataSource URL is about:blank, but the document URL
   // changes to match the parent document after Gmail document.writes into
@@ skipping 210 matching lines @@
     v8::Local<v8::Value> argv[]) {
   return context_->CallFunction(function, argc, argv);
 }
 
 gin::ContextHolder* ScriptContext::Runner::GetContextHolder() {
   v8::HandleScope handle_scope(context_->isolate());
   return gin::PerContextData::From(context_->v8_context())->context_holder();
 }
 
 }  // namespace extensions