Begin to enable extension APIs in Extension Service Worker.

extensions/renderer/script_context.cc

Index: extensions/renderer/script_context.cc
diff --git a/extensions/renderer/script_context.cc b/extensions/renderer/script_context.cc
index 529c5fcd40cba368725f1f57b0937420ee759035..587087bd1a5e05af173a28c3375f7c346ca4e205 100644
--- a/extensions/renderer/script_context.cc
+++ b/extensions/renderer/script_context.cc
@@ -256,8 +256,12 @@ std::string ScriptContext::GetEffectiveContextTypeDescription() const {
 
 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