Make Blacklist::IsBlacklist asynchronous (it will need to be for safe

chrome/common/extensions/extension_set.cc

 // 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.
 
 #include "chrome/common/extensions/extension_set.h"
 
 #include "base/logging.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/url_constants.h"
 #include "extensions/common/constants.h"
@@ skipping 45 matching lines @@
 
 bool ExtensionSet::InsertAll(const ExtensionSet& extensions) {
   size_t before = size();
   for (ExtensionSet::const_iterator iter = extensions.begin();
        iter != extensions.end(); ++iter) {
     Insert(*iter);
   }
   return size() != before;
 }
 
-void ExtensionSet::Remove(const std::string& id) {
-  extensions_.erase(id);
+bool ExtensionSet::Remove(const std::string& id) {
+  return extensions_.erase(id) > 0;
 }
 
 void ExtensionSet::Clear() {
   extensions_.clear();
 }
 
 std::string ExtensionSet::GetExtensionOrAppIDByURL(
     const ExtensionURLInfo& info) const {
   DCHECK(!info.origin().isNull());
 
@@ skipping 52 matching lines @@
 }
 
 const Extension* ExtensionSet::GetByID(const std::string& id) const {
   ExtensionMap::const_iterator i = extensions_.find(id);
   if (i != extensions_.end())
     return i->second.get();
   else
     return NULL;
 }
 
+std::set<std::string> ExtensionSet::GetIDs() const {
+  std::set<std::string> ids;
+  for (ExtensionMap::const_iterator it = extensions_.begin();
+       it != extensions_.end(); ++it) {
+    ids.insert(it->first);
+  }
+  return ids;
+}
+
 bool ExtensionSet::ExtensionBindingsAllowed(
     const ExtensionURLInfo& info) const {
   if (info.origin().isUnique() || IsSandboxedPage(info))
     return false;
 
   if (info.url().SchemeIs(extensions::kExtensionScheme))
     return true;
 
   ExtensionMap::const_iterator i = extensions_.begin();
   for (; i != extensions_.end(); ++i) {
     if (i->second->location() == Extension::COMPONENT &&
         i->second->web_extent().MatchesURL(info.url()))
       return true;
   }
 
   return false;
 }
 
 bool ExtensionSet::IsSandboxedPage(const ExtensionURLInfo& info) const {
   if (info.url().SchemeIs(extensions::kExtensionScheme)) {
     const Extension* extension = GetByID(info.url().host());
     if (extension) {
       return extension->IsSandboxedPage(info.url().path());
     }
   }
   return false;
 }