Move a bunch of child-only code from content/common to content/child

content/common/child_histogram_message_filter.cc

Index: content/common/child_histogram_message_filter.cc
diff --git a/content/common/child_histogram_message_filter.cc b/content/common/child_histogram_message_filter.cc
deleted file mode 100644
index 535d5a8d6fd691e3d4254cb650c49ba5093ab60a..0000000000000000000000000000000000000000
--- a/content/common/child_histogram_message_filter.cc
+++ /dev/null
@@ -1,105 +0,0 @@
-// 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 "content/common/child_histogram_message_filter.h"
-
-#include <ctype.h>
-
-#include "base/bind.h"
-#include "base/message_loop.h"
-#include "base/metrics/statistics_recorder.h"
-#include "base/pickle.h"
-#include "content/common/child_process.h"
-#include "content/common/child_process_messages.h"
-#include "content/common/child_thread.h"
-
-namespace content {
-
-ChildHistogramMessageFilter::ChildHistogramMessageFilter()
-    : channel_(NULL),
-      histogram_snapshot_manager_(this) {
-}
-
-ChildHistogramMessageFilter::~ChildHistogramMessageFilter() {
-}
-
-void ChildHistogramMessageFilter::OnFilterAdded(IPC::Channel* channel) {
-  channel_ = channel;
-}
-
-void ChildHistogramMessageFilter::OnFilterRemoved() {
-}
-
-bool ChildHistogramMessageFilter::OnMessageReceived(
-    const IPC::Message& message) {
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(ChildHistogramMessageFilter, message)
-    IPC_MESSAGE_HANDLER(ChildProcessMsg_GetChildHistogramData,
-                        OnGetChildHistogramData)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-  return handled;
-}
-
-void ChildHistogramMessageFilter::SendHistograms(int sequence_number) {
-  ChildProcess::current()->io_message_loop_proxy()->PostTask(
-      FROM_HERE, base::Bind(&ChildHistogramMessageFilter::UploadAllHistograms,
-                            this, sequence_number));
-}
-
-void ChildHistogramMessageFilter::OnGetChildHistogramData(int sequence_number) {
-  UploadAllHistograms(sequence_number);
-}
-
-void ChildHistogramMessageFilter::UploadAllHistograms(int sequence_number) {
-  DCHECK_EQ(0u, pickled_histograms_.size());
-
-  // Push snapshots into our pickled_histograms_ vector.
-  // Note: Before serializing, we set the kIPCSerializationSourceFlag for all
-  // the histograms, so that the receiving process can distinguish them from the
-  // local histograms.
-  histogram_snapshot_manager_.PrepareDeltas(
-      base::Histogram::kIPCSerializationSourceFlag, false);
-
-  channel_->Send(new ChildProcessHostMsg_ChildHistogramData(
-      sequence_number, pickled_histograms_));
-
-  pickled_histograms_.clear();
-  static int count = 0;
-  count++;
-  DHISTOGRAM_COUNTS("Histogram.ChildProcessHistogramSentCount", count);
-}
-
-void ChildHistogramMessageFilter::RecordDelta(
-    const base::HistogramBase& histogram,
-    const base::HistogramSamples& snapshot) {
-  DCHECK_NE(0, snapshot.TotalCount());
-
-  Pickle pickle;
-  histogram.SerializeInfo(&pickle);
-  snapshot.Serialize(&pickle);
-
-  pickled_histograms_.push_back(
-      std::string(static_cast<const char*>(pickle.data()), pickle.size()));
-}
-
-void ChildHistogramMessageFilter::InconsistencyDetected(
-    base::HistogramBase::Inconsistency problem) {
-  UMA_HISTOGRAM_ENUMERATION("Histogram.InconsistenciesChildProcess",
-                            problem, base::HistogramBase::NEVER_EXCEEDED_VALUE);
-}
-
-void ChildHistogramMessageFilter::UniqueInconsistencyDetected(
-    base::HistogramBase::Inconsistency problem) {
-  UMA_HISTOGRAM_ENUMERATION("Histogram.InconsistenciesChildProcessUnique",
-                            problem, base::HistogramBase::NEVER_EXCEEDED_VALUE);
-}
-
-void ChildHistogramMessageFilter::InconsistencyDetectedInLoggedCount(
-    int amount) {
-  UMA_HISTOGRAM_COUNTS("Histogram.InconsistentSnapshotChildProcess",
-                       std::abs(amount));
-}
-
-}  // namespace content