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

chrome/common/worker_thread_ticker_unittest.cc

 // Copyright (c) 2009 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/worker_thread_ticker.h"
 
-#include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/platform_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 class TestCallback : public WorkerThreadTicker::Callback {
  public:
   TestCallback() : counter_(0), message_loop_(MessageLoop::current()) {
   }
@@ skipping 82 matching lines @@
 TEST(WorkerThreadTickerTest, LongCallback) {
   MessageLoop loop;
 
   WorkerThreadTicker ticker(50);
   LongCallback callback;
   ASSERT_TRUE(ticker.RegisterTickHandler(&callback));
 
   ASSERT_TRUE(ticker.Start());
   RunMessageLoopForAWhile();
 }