Remove logging.h from cc files that don't use it.

chrome/browser/command_updater_unittest.cc

 // Copyright (c) 2006-2008 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 "base/logging.h"
 #include "chrome/browser/command_updater.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 class TestingCommandHandlerMock
     : public CommandUpdater::CommandUpdaterDelegate {
  public:
   virtual void ExecuteCommand(int id) {
     EXPECT_EQ(1, id);
   }
 };
@@ skipping 83 matching lines @@
 
   // Remove one observer and update the command. Check the states, which
   // should be different.
   command_updater.RemoveCommandObserver(&observer_remove);
   command_updater.UpdateCommandEnabled(1, false);
   command_updater.UpdateCommandEnabled(2, false);
   command_updater.UpdateCommandEnabled(3, false);
   EXPECT_TRUE(observer_remove.enabled());
   EXPECT_FALSE(observer_keep.enabled());
 }