Lazily load API schemas from resource files and convert all APIs to features

chrome/common/extensions/api/extension_api.h

Index: chrome/common/extensions/api/extension_api.h
diff --git a/chrome/common/extensions/api/extension_api.h b/chrome/common/extensions/api/extension_api.h
index b1aa0cb14a8add24e204e7446f430fd13906d20e..68bb3a92f4ca74aee5c050462a029a2a217bb9a7 100644
--- a/chrome/common/extensions/api/extension_api.h
+++ b/chrome/common/extensions/api/extension_api.h
@@ -10,6 +10,7 @@
 #include <string>
 
 #include "base/basictypes.h"
+#include "base/callback.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
@@ -61,8 +62,8 @@ class ExtensionAPI {
   ExtensionAPI();
   virtual ~ExtensionAPI();
 
-  void RegisterSchema(const std::string& api_name,
-                      const base::StringPiece& source);
+  void RegisterSchema(const std::string& api_name, int resource_id);
+  void RegisterGeneratedSchema(const std::string& name);
 
   void RegisterDependencyProvider(const std::string& name,
                                   FeatureProvider* provider);
@@ -146,7 +147,8 @@ class ExtensionAPI {
 
   // Map from each API that hasn't been loaded yet to the schema which defines
   // it. Note that there may be multiple APIs per schema.
-  typedef std::map<std::string, base::StringPiece> UnloadedSchemaMap;
+  typedef std::map<std::string, base::Callback<base::StringPiece()> >
+      UnloadedSchemaMap;
   UnloadedSchemaMap unloaded_schemas_;
 
   // Schemas for each namespace.