Use a direct include of strings headers in chrome/common/, part 1.

chrome/common/extensions/command_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/common/extensions/command.h"
 
 #include "base/memory/scoped_ptr.h"
-#include "base/string_util.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 class CommandTest : public testing::Test {
 };
 
 TEST(CommandTest, ExtensionCommandParsing) {
   const ui::Accelerator none = ui::Accelerator();
   const ui::Accelerator shift_f = ui::Accelerator(ui::VKEY_F,
@@ skipping 205 matching lines @@
   key_dict->SetString("windows", "Ctrl+Shift+W");
 #endif
   EXPECT_FALSE(command.Parse(input.get(), command_name, 0, &error));
 
   // Make sure Mac specific keys are not processed on other platforms.
 #if !defined(OS_MACOSX)
   key_dict->SetString("windows", "Command+Shift+M");
   EXPECT_FALSE(command.Parse(input.get(), command_name, 0, &error));
 #endif
 }