Add an experimental permissions API for extensions.

chrome/common/extensions/extension_messages.cc

Index: chrome/common/extensions/extension_messages.cc
diff --git a/chrome/common/extensions/extension_messages.cc b/chrome/common/extensions/extension_messages.cc
index b38823495e8a3d0631f460049570856c4bd35b61..0cd429b37e02cc47adc41d8c8e6e4e1f83f3e726 100644
--- a/chrome/common/extensions/extension_messages.cc
+++ b/chrome/common/extensions/extension_messages.cc
@@ -24,10 +24,14 @@ ExtensionMsg_Loaded_Params::ExtensionMsg_Loaded_Params(
 }
 
 ExtensionMsg_Loaded_Params::ExtensionMsg_Loaded_Params(
-    const Extension* extension)
+    const Extension* extension,
+    const ExtensionPermissionSet* active)
     : manifest(new DictionaryValue()),
       location(extension->location()),
       path(extension->path()),
+      apis(active->apis()),
+      explicit_hosts(active->explicit_hosts()),
+      scriptable_hosts(active->scriptable_hosts()),
       id(extension->id()),
       creation_flags(extension->creation_flags()) {
   // As we need more bits of extension data in the renderer, add more keys to
@@ -65,6 +69,11 @@ scoped_refptr<Extension>
   return extension;
 }
 
+const ExtensionPermissionSet*
+    ExtensionMsg_Loaded_Params::GetActivePermissions() const {
+  return new ExtensionPermissionSet(apis, explicit_hosts, scriptable_hosts);
+}
+
 namespace IPC {
 
 template <>
@@ -116,9 +125,7 @@ void ParamTraits<URLPatternSet>::Write(Message* m, const param_type& p) {
 bool ParamTraits<URLPatternSet>::Read(const Message* m, void** iter,
                                         param_type* p) {
   std::set<URLPattern> patterns;
-  bool success =
-      ReadParam(m, iter, &patterns);
-  if (!success)
+  if (!ReadParam(m, iter, &patterns))
     return false;
 
   for (std::set<URLPattern>::iterator i = patterns.begin();
@@ -131,12 +138,35 @@ void ParamTraits<URLPatternSet>::Log(const param_type& p, std::string* l) {
   LogParam(p.patterns(), l);
 }
 
+void ParamTraits<ExtensionAPIPermission::ID>::Write(
+    Message* m, const param_type& p) {
+  WriteParam(m, static_cast<int>(p));
+}
+
+bool ParamTraits<ExtensionAPIPermission::ID>::Read(
+    const Message* m, void** iter, param_type* p) {
+  int api_id = -2;
+  if (!ReadParam(m, iter, &api_id))
+    return false;
+
+  *p = static_cast<ExtensionAPIPermission::ID>(api_id);
+  return true;
+}
+
+void ParamTraits<ExtensionAPIPermission::ID>::Log(
+    const param_type& p, std::string* l) {
+  LogParam(static_cast<int>(p), l);
+}
+
 void ParamTraits<ExtensionMsg_Loaded_Params>::Write(Message* m,
                                                     const param_type& p) {
   WriteParam(m, p.location);
   WriteParam(m, p.path);
   WriteParam(m, *(p.manifest));
   WriteParam(m, p.creation_flags);
+  WriteParam(m, p.apis);
+  WriteParam(m, p.explicit_hosts);
+  WriteParam(m, p.scriptable_hosts);
 }
 
 bool ParamTraits<ExtensionMsg_Loaded_Params>::Read(const Message* m,
@@ -146,7 +176,10 @@ bool ParamTraits<ExtensionMsg_Loaded_Params>::Read(const Message* m,
   return ReadParam(m, iter, &p->location) &&
          ReadParam(m, iter, &p->path) &&
          ReadParam(m, iter, p->manifest.get()) &&
-         ReadParam(m, iter, &p->creation_flags);
+         ReadParam(m, iter, &p->creation_flags) &&
+         ReadParam(m, iter, &p->apis) &&
+         ReadParam(m, iter, &p->explicit_hosts) &&
+         ReadParam(m, iter, &p->scriptable_hosts);
 }
 
 void ParamTraits<ExtensionMsg_Loaded_Params>::Log(const param_type& p,