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

chrome/common/extensions/api/extension_api.h

 // 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.
 
 #ifndef CHROME_COMMON_EXTENSIONS_API_EXTENSION_API_H_
 #define CHROME_COMMON_EXTENSIONS_API_EXTENSION_API_H_
 
 #include <map>
 #include <set>
 #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"
 #include "base/strings/string_piece.h"
 #include "base/values.h"
 #include "chrome/common/extensions/features/feature.h"
 #include "chrome/common/extensions/features/feature_provider.h"
 #include "extensions/common/url_pattern_set.h"
 
 namespace base {
@@ skipping 31 matching lines @@
   // "permission", or "api". The second part is the full name of the feature.
   static void SplitDependencyName(const std::string& full_name,
                                   std::string* feature_type,
                                   std::string* feature_name);
 
   // Creates a completely clean instance. Configure using RegisterSchema() and
   // RegisterDependencyProvider before use.
   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);
 
   // Returns true if the specified API is available. |api_full_name| can be
   // either a namespace name (like "bookmarks") or a member name (like
   // "bookmarks.create"). Returns true if the feature and all of its
   // dependencies are available to the specified context.
   Feature::Availability IsAvailable(const std::string& api_full_name,
                                     const Extension* extension,
@@ skipping 63 matching lines @@
                                 const Extension* extension,
                                 const GURL& url);
 
   // Checks if an API is *entirely* privileged. This won't include APIs such as
   // "storage" which is entirely unprivileged, nor "extension" which has
   // unprivileged components.
   bool IsPrivilegedAPI(const std::string& name);
 
   // 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.
   typedef std::map<std::string, linked_ptr<const DictionaryValue> > SchemaMap;
   SchemaMap schemas_;
 
   // APIs that are entirely unprivileged.
   std::set<std::string> completely_unprivileged_apis_;
 
   // APIs that are not entirely unprivileged, but have unprivileged components.
   std::set<std::string> partially_unprivileged_apis_;
 
   // FeatureProviders used for resolving dependencies.
   typedef std::map<std::string, FeatureProvider*> FeatureProviderMap;
   FeatureProviderMap dependency_providers_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionAPI);
 };
 
 }  // extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_API_EXTENSION_API_H_