Resubmit: Block content scripts from executing until user grants permission

extensions/renderer/dispatcher.cc

 // Copyright 2014 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.
 
 #include "extensions/renderer/dispatcher.h"
 
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/debug/alias.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 741 matching lines @@
 
 void Dispatcher::OnUpdateTabSpecificPermissions(
     int page_id,
     int tab_id,
     const std::string& extension_id,
     const URLPatternSet& origin_set) {
   delegate_->UpdateTabSpecificPermissions(
       this, page_id, tab_id, extension_id, origin_set);
 }
 
-void Dispatcher::OnUpdateUserScripts(base::SharedMemoryHandle scripts) {
-  DCHECK(base::SharedMemory::IsHandleValid(scripts)) << "Bad scripts handle";
-  user_script_slave_->UpdateScripts(scripts);
+void Dispatcher::OnUpdateUserScripts(
+    base::SharedMemoryHandle scripts,
+    const std::set<std::string>& extension_ids) {
+  if (!base::SharedMemory::IsHandleValid(scripts)) {
+    NOTREACHED() << "Bad scripts handle";
+    return;
+  }
+
+  for (std::set<std::string>::const_iterator iter = extension_ids.begin();
+       iter != extension_ids.end();
+       ++iter) {
+    if (!Extension::IdIsValid(*iter)) {
+      NOTREACHED() << "Invalid extension id: " << *iter;
+      return;
+    }
+  }
+
+  user_script_slave_->UpdateScripts(scripts, extension_ids);
   UpdateActiveExtensions();
 }
 
 void Dispatcher::OnUsingWebRequestAPI(bool adblock,
                                       bool adblock_plus,
                                       bool other_webrequest) {
   delegate_->HandleWebRequestAPIUsage(adblock, adblock_plus, other_webrequest);
 }
 
 void Dispatcher::UpdateActiveExtensions() {
@@ skipping 438 matching lines @@
     return v8::Handle<v8::Object>();
 
   if (bind_name)
     *bind_name = split.back();
 
   return bind_object.IsEmpty() ? AsObjectOrEmpty(GetOrCreateChrome(context))
                                : bind_object;
 }
 
 }  // namespace extensions