[extensions] Stop parsing webstore urls so much

extensions/shell/common/shell_extensions_client.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/shell/common/shell_extensions_client.h"
 
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "extensions/common/api/generated_schemas.h"
@@ skipping 58 matching lines @@
  private:
   DISALLOW_COPY_AND_ASSIGN(ShellPermissionMessageProvider);
 };
 
 base::LazyInstance<ShellPermissionMessageProvider>
     g_permission_message_provider = LAZY_INSTANCE_INITIALIZER;
 
 }  // namespace
 
 ShellExtensionsClient::ShellExtensionsClient()
-    : extensions_api_permissions_(ExtensionsAPIPermissions()) {
-}
+    : extensions_api_permissions_(ExtensionsAPIPermissions()),
+      webstore_update_url_(extension_urls::kChromeWebstoreUpdateURL) {}
 
 ShellExtensionsClient::~ShellExtensionsClient() {
 }
 
 void ShellExtensionsClient::Initialize() {
   RegisterCommonManifestHandlers();
   ManifestHandler::FinalizeRegistration();
   // TODO(jamescook): Do we need to whitelist any extensions?
 
   PermissionsInfo::GetInstance()->AddProvider(extensions_api_permissions_,
@@ skipping 87 matching lines @@
   return true;
 }
 
 void ShellExtensionsClient::RecordDidSuppressFatalError() {
 }
 
 std::string ShellExtensionsClient::GetWebstoreBaseURL() const {
   return extension_urls::kChromeWebstoreBaseURL;
 }
 
-std::string ShellExtensionsClient::GetWebstoreUpdateURL() const {
-  return extension_urls::kChromeWebstoreUpdateURL;
+const GURL& ShellExtensionsClient::GetWebstoreUpdateURL() const {
+  return webstore_update_url_;
 }
 
 bool ShellExtensionsClient::IsBlacklistUpdateURL(const GURL& url) const {
   // TODO(rockot): Maybe we want to do something else here. For now we accept
   // any URL as a blacklist URL because we don't really care.
   return true;
 }
 
 }  // namespace extensions