Add an experimental permissions API for extensions.

chrome/common/extensions/extension_messages.h

Index: chrome/common/extensions/extension_messages.h
diff --git a/chrome/common/extensions/extension_messages.h b/chrome/common/extensions/extension_messages.h
index 53abba65a0c22cf95c46f6dafbf693b120d3b443..6d41b9c8355d63101b1c3ea9ee12d5524ae9cf0d 100644
--- a/chrome/common/extensions/extension_messages.h
+++ b/chrome/common/extensions/extension_messages.h
@@ -8,6 +8,7 @@
 #include "base/shared_memory.h"
 #include "base/values.h"
 #include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/extension_permission_set.h"
 #include "chrome/common/extensions/url_pattern.h"
 #include "chrome/common/extensions/url_pattern_set.h"
 #include "chrome/common/web_apps.h"
@@ -90,7 +91,9 @@ typedef std::map<std::string, std::string> SubstitutionMap;
 struct ExtensionMsg_Loaded_Params {
   ExtensionMsg_Loaded_Params();
   ~ExtensionMsg_Loaded_Params();
-  explicit ExtensionMsg_Loaded_Params(const Extension* extension);
+  explicit ExtensionMsg_Loaded_Params(
+      const Extension* extension,
+      const ExtensionPermissionSet* active_permissions);
 
   // A copy constructor is needed because this structure can end up getting
   // copied inside the IPC machinery on gcc <= 4.2.
@@ -99,6 +102,9 @@ struct ExtensionMsg_Loaded_Params {
   // Creates a new extension from the data in this object.
   scoped_refptr<Extension> ConvertToExtension() const;
 
+  // Passes ownership to the caller.
+  const ExtensionPermissionSet* GetActivePermissions() const;
+
   // The subset of the extension manifest data we send to renderers.
   scoped_ptr<DictionaryValue> manifest;
 
@@ -109,6 +115,11 @@ struct ExtensionMsg_Loaded_Params {
   // to generate the extension ID for extensions that are loaded unpacked.
   FilePath path;
 
+  // The extension's current active permissions.
+  ExtensionAPIPermissionSet apis;
+  URLPatternSet explicit_hosts;
+  URLPatternSet scriptable_hosts;
+
   // We keep this separate so that it can be used in logging.
   std::string id;
 
@@ -135,6 +146,14 @@ struct ParamTraits<URLPatternSet> {
 };
 
 template <>
+struct ParamTraits<ExtensionAPIPermission::ID> {
+  typedef ExtensionAPIPermission::ID param_type;
+  static void Write(Message* m, const param_type& p);
+  static bool Read(const Message* m, void** iter, param_type* p);
+  static void Log(const param_type& p, std::string* l);
+};
+
+template <>
 struct ParamTraits<ExtensionMsg_Loaded_Params> {
   typedef ExtensionMsg_Loaded_Params param_type;
   static void Write(Message* m, const param_type& p);
@@ -214,6 +233,13 @@ IPC_MESSAGE_ROUTED1(ExtensionMsg_GetApplicationInfo,
 IPC_MESSAGE_ROUTED1(ExtensionMsg_UpdateBrowserWindowId,
                     int /* id of browser window */)
 
+// Tell the renderer to update an extension's permission set.
+IPC_MESSAGE_CONTROL4(ExtensionMsg_UpdatePermissions,
+                     std::string /* extension_id*/,
+                     ExtensionAPIPermissionSet,
+                     URLPatternSet,
+                     URLPatternSet)
+
 // Tell the renderer which type this view is.
 IPC_MESSAGE_ROUTED1(ExtensionMsg_NotifyRenderViewType,
                     ViewType::Type /* view_type */)