Move more code from headers to implementation.

chrome/common/metrics_helpers.cc

 // 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/common/metrics_helpers.h"
 
 #if defined(USE_SYSTEM_LIBBZ2)
 #include <bzlib.h>
 #else
 #include "third_party/bzip2/bzlib.h"
@@ skipping 481 matching lines @@
 void MetricsServiceBase::UniqueInconsistencyDetected(int problem) {
   UMA_HISTOGRAM_ENUMERATION("Histogram.InconsistenciesBrowserUnique",
                             problem, Histogram::NEVER_EXCEEDED_VALUE);
 }
 
 void MetricsServiceBase::SnapshotProblemResolved(int amount) {
   UMA_HISTOGRAM_COUNTS("Histogram.InconsistentSnapshotBrowser",
                        std::abs(amount));
 }
 
+HistogramSender::HistogramSender() {}
+
+HistogramSender::~HistogramSender() {}
+
 void HistogramSender::TransmitAllHistograms(Histogram::Flags flag_to_set,
                                             bool send_only_uma) {
   StatisticsRecorder::Histograms histograms;
   StatisticsRecorder::GetHistograms(&histograms);
   for (StatisticsRecorder::Histograms::const_iterator it = histograms.begin();
        histograms.end() != it;
        ++it) {
     (*it)->SetFlags(flag_to_set);
     if (send_only_uma &&
         0 == ((*it)->flags() & Histogram::kUmaTargetedHistogramFlag))
@@ skipping 50 matching lines @@
     snapshot.Subtract(*already_logged);
   }
 
   // Snapshot now contains only a delta to what we've already_logged.
   if (snapshot.redundant_count() > 0) {
     TransmitHistogramDelta(histogram, snapshot);
     // Add new data into our running total.
     already_logged->Add(snapshot);
   }
 }