Move c/r/extensions/* into extensions namespace

chrome/renderer/extensions/event_unittest.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/test/base/module_system_test.h"
 
 #include "grit/renderer_resources.h"
 
+namespace extensions {
 namespace {
 
 class EventUnittest : public ModuleSystemTest {
   virtual void SetUp() OVERRIDE {
     ModuleSystemTest::SetUp();
     module_system_->RunString("chrome = {};", "setup-chrome");
 
     RegisterModule("event", IDR_EVENT_BINDINGS_JS);
     RegisterModule("schemaUtils", IDR_SCHEMA_UTILS_JS);
     RegisterModule("utils", IDR_UTILS_JS);
@@ skipping 247 matching lines @@
       "try {"
       "  e.addListener(cb);"
       "} catch (e) {"
       "  caught = true;"
       "}"
       "assert.AssertTrue(caught);");
   module_system_->Require("test");
 }
 
 }  // namespace
+}  // namespace extensions