Lazily load extension API schemas

chrome/renderer/extensions/api_definitions_natives.cc

Index: chrome/renderer/extensions/api_definitions_natives.cc
diff --git a/chrome/renderer/extensions/api_definitions_natives.cc b/chrome/renderer/extensions/api_definitions_natives.cc
index 85f86b333dc2f1f9081a10de0dd72a35e1efd660..ac592eeb58042b39d3b5057abefb0c516b8b369c 100644
--- a/chrome/renderer/extensions/api_definitions_natives.cc
+++ b/chrome/renderer/extensions/api_definitions_natives.cc
@@ -6,6 +6,8 @@
 
 #include <algorithm>
 
+#include "chrome/common/extensions/api/extension_api.h"
+
 namespace {
 const char kInvalidExtensionNamespace[] = "Invalid extension namespace";
 }
@@ -23,7 +25,8 @@ ApiDefinitionsNatives::ApiDefinitionsNatives(Dispatcher* dispatcher,
 
 v8::Handle<v8::Value> ApiDefinitionsNatives::GetExtensionAPIDefinition(
     const v8::Arguments& args) {
-  std::set<std::string> available_apis(context_->GetAvailableExtensionAPIs());
+  std::set<std::string> available_apis(
+      ExtensionAPI::GetSharedInstance()->GetAllAPINames());
   if (args.Length() == 0)
     return dispatcher()->v8_schema_registry()->GetSchemas(available_apis);