Migrate chrome/browser files to histogram_macros.h includes.

chrome/browser/diagnostics/diagnostics_test.cc

 // Copyright (c) 2011 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/browser/diagnostics/diagnostics_test.h"
 
 #include "base/files/file_path.h"
 #include "base/logging.h"
-#include "base/metrics/histogram.h"
+#include "base/metrics/histogram_macros.h"
 #include "base/path_service.h"
 #include "build/build_config.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths.h"
 
 namespace diagnostics {
 
 DiagnosticsTest::DiagnosticsTest(DiagnosticsTestId id)
     : id_(id), outcome_code_(-1), result_(DiagnosticsModel::TEST_NOT_RUN) {}
 
@@ skipping 83 matching lines @@
 
 base::Time DiagnosticsTest::GetStartTime() const { return start_time_; }
 
 base::Time DiagnosticsTest::GetEndTime() const { return end_time_; }
 
 bool DiagnosticsTest::RecoveryImpl(DiagnosticsModel::Observer* observer) {
   return true;
 }
 
 }  // namespace diagnostics