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

content/common/child_histogram_message_filter.h

Index: content/common/child_histogram_message_filter.h
diff --git a/content/common/child_histogram_message_filter.h b/content/common/child_histogram_message_filter.h
deleted file mode 100644
index 9339d8e1e16b202fb490ed06a11315313ef2e9e7..0000000000000000000000000000000000000000
--- a/content/common/child_histogram_message_filter.h
+++ /dev/null
@@ -1,69 +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.
-
-#ifndef CONTENT_COMMOM_CHILD_HISTOGRAM_MESSAGE_FILTER_H_
-#define CONTENT_COMMOM_CHILD_HISTOGRAM_MESSAGE_FILTER_H_
-
-#include <string>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/metrics/histogram_base.h"
-#include "base/metrics/histogram_flattener.h"
-#include "base/metrics/histogram_snapshot_manager.h"
-#include "ipc/ipc_channel_proxy.h"
-
-namespace base {
-class HistogramSamples;
-}  // namespace base
-
-namespace content {
-
-class ChildHistogramMessageFilter : public base::HistogramFlattener,
-                                    public IPC::ChannelProxy::MessageFilter {
- public:
-  ChildHistogramMessageFilter();
-
-  // IPC::ChannelProxy::MessageFilter implementation.
-  virtual void OnFilterAdded(IPC::Channel* channel) OVERRIDE;
-  virtual void OnFilterRemoved() OVERRIDE;
-  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
-
-  void SendHistograms(int sequence_number);
-
-  // HistogramFlattener interface (override) methods.
-  virtual void RecordDelta(const base::HistogramBase& histogram,
-                           const base::HistogramSamples& snapshot) OVERRIDE;
-  virtual void InconsistencyDetected(
-      base::HistogramBase::Inconsistency problem) OVERRIDE;
-  virtual void UniqueInconsistencyDetected(
-      base::HistogramBase::Inconsistency problem) OVERRIDE;
-  virtual void InconsistencyDetectedInLoggedCount(int amount) OVERRIDE;
-
- private:
-  typedef std::vector<std::string> HistogramPickledList;
-
-  virtual ~ChildHistogramMessageFilter();
-
-  // Message handlers.
-  virtual void OnGetChildHistogramData(int sequence_number);
-
-  // Extract snapshot data and then send it off the the Browser process.
-  // Send only a delta to what we have already sent.
-  void UploadAllHistograms(int sequence_number);
-
-  IPC::Channel* channel_;
-
-  // Collection of histograms to send to the browser.
-  HistogramPickledList pickled_histograms_;
-
-  // |histogram_snapshot_manager_| prepares histogram deltas for transmission.
-  base::HistogramSnapshotManager histogram_snapshot_manager_;
-
-  DISALLOW_COPY_AND_ASSIGN(ChildHistogramMessageFilter);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_COMMOM_CHILD_HISTOGRAM_MESSAGE_FILTER_H_