FBTF: Remove unneeded headers from base/ (part 7)

chrome_frame/chrome_frame_histograms.cc

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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_frame/chrome_frame_histograms.h"
 
 #include "base/histogram.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
-#include "base/pickle.h"
 
   // Initialize histogram statistics gathering system.
 base::LazyInstance<StatisticsRecorder>
     g_statistics_recorder_(base::LINKER_INITIALIZED);
 
 ChromeFrameHistogramSnapshots::ChromeFrameHistogramSnapshots() {
   // Ensure that an instance of the StatisticsRecorder object is created.
   g_statistics_recorder_.Get();
 }
 
@@ skipping 53 matching lines @@
     const Histogram::SampleSet& snapshot,
     HistogramPickledList* pickled_histograms) {
 
   DCHECK(0 != snapshot.TotalCount());
   snapshot.CheckSize(histogram);
 
   std::string histogram_info =
       Histogram::SerializeHistogramInfo(histogram, snapshot);
   pickled_histograms->push_back(histogram_info);
 }