Signal extension API schema corruption to the browser process.

extensions/common/extension_api.h

 // Copyright 2013 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 EXTENSIONS_COMMON_EXTENSION_API_H_
 #define EXTENSIONS_COMMON_EXTENSION_API_H_
 
 #include <map>
 #include <memory>
 #include <string>
@@ skipping 88 matching lines @@
   // Determines whether an API, or any parts of that API, are available in
   // |context|.
   bool IsAnyFeatureAvailableToContext(const Feature& api,
                                       const Extension* extension,
                                       Feature::Context context,
                                       const GURL& url);
 
   // Returns true if |name| is available to WebUI contexts on |url|.
   bool IsAvailableToWebUI(const std::string& name, const GURL& url);
 
-  // Gets the schema for the extension API with namespace |full_name|.
+  // Gets the schema for the extension API with namespace |full_name|, or
+  // nullptr if the schema could not be loaded.
   // Ownership remains with this object.
   const base::DictionaryValue* GetSchema(const std::string& full_name);
 
+  // Attempts to load the schema for |api|. Called by the browser process when

[Devlin, 2016/08/19 15:02:32]

nit: omit "called by the browser process...".  That should be obvious from call
sites, and this is bound to get out of date if we ever add more call sites. :)

[Wez, 2016/08/19 18:22:15]

Done.

+  // it is notified that the schema may be corrupted. If the schema cannot be
+  // loaded then the calling process will be killed. If the |api| is not
+  // recognized then the call has no effect.
+  void LoadSchemaListOrDie(const std::string& api);
+
   // Splits a full name from the extension API into its API and child name
   // parts. Some examples:
   //
   // "bookmarks.create" -> ("bookmarks", "create")
   // "experimental.input.ui.cursorUp" -> ("experimental.input.ui", "cursorUp")
   // "storage.sync.set" -> ("storage", "sync.get")
   // "<unknown-api>.monkey" -> ("", "")
   //
   // The |child_name| parameter can be be NULL if you don't need that part.
   std::string GetAPINameFromFullName(const std::string& full_name,
@@ skipping 28 matching lines @@
   // FeatureProviders used for resolving dependencies.
   typedef std::map<std::string, const FeatureProvider*> FeatureProviderMap;
   FeatureProviderMap dependency_providers_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionAPI);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_EXTENSION_API_H_