Minor cleanup in histogram_synchronizer.

BUG=none
TEST=none
Review URL: http://codereview.chromium.org/283016

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@29341 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 2 insertions, 13 deletions

diff --git a/chrome/common/histogram_synchronizer.cc b/chrome/common/histogram_synchronizer.cc
index 54ff230..cc20c41 100644
--- a/chrome/common/histogram_synchronizer.cc
+++ b/chrome/common/histogram_synchronizer.cc
@@ -2,19 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include <string>
+#include "chrome/common/histogram_synchronizer.h"
 
 #include "base/histogram.h"
 #include "base/logging.h"
-#include "base/string_util.h"
 #include "base/thread.h"
-#include "chrome/browser/browser.h"
-#include "chrome/browser/browser_list.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/renderer_host/render_process_host.h"
-#include "chrome/common/child_thread.h"
 #include "chrome/common/render_messages.h"
-#include "chrome/common/histogram_synchronizer.h"
 
 using base::Time;
 using base::TimeDelta;
diff --git a/chrome/common/histogram_synchronizer.h b/chrome/common/histogram_synchronizer.h
index ed866fc..35e965e 100644
--- a/chrome/common/histogram_synchronizer.h
+++ b/chrome/common/histogram_synchronizer.h
@@ -5,23 +5,17 @@
 #ifndef CHROME_COMMON_HISTOGRAM_SYNCHRONIZER_H_
 #define CHROME_COMMON_HISTOGRAM_SYNCHRONIZER_H_
 
-#include <list>
-#include <map>
-#include <set>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/condition_variable.h"
 #include "base/lock.h"
-#include "base/message_loop.h"
-#include "base/process.h"
 #include "base/ref_counted.h"
-#include "base/scoped_ptr.h"
-#include "base/task.h"
 #include "base/time.h"
 
 class MessageLoop;
+class Task;
 
 class HistogramSynchronizer : public
     base::RefCountedThreadSafe<HistogramSynchronizer> {