autofill: Refactor PersonalDataManager::Observer into its own header file.

chrome/test/live_sync/performance/autofill_sync_perf_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 "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/autofill/autofill_common_test.h"
+#include "chrome/browser/autofill/autofill_profile.h"
 #include "chrome/browser/sync/profile_sync_service_harness.h"
 #include "chrome/test/live_sync/autofill_helper.h"
 #include "chrome/test/live_sync/live_sync_test.h"
 #include "chrome/test/live_sync/performance/sync_timing_helper.h"
 
 // TODO(braffert): Move kNumBenchmarkPoints and kBenchmarkPoints for all
 // datatypes into a performance test base class, once it is possible to do so.
 static const int kNumProfiles = 150;
 static const int kNumBenchmarkPoints = 18;
 static const int kBenchmarkPoints[] = {1, 10, 20, 30, 40, 50, 75, 100, 125,
@@ skipping 150 matching lines @@
     base::TimeDelta dt_delete =
         SyncTimingHelper::TimeMutualSyncCycle(GetClient(0), GetClient(1));
     ASSERT_EQ(0, AutofillHelper::GetProfileCount(0));
     ASSERT_TRUE(AutofillHelper::AllProfilesMatch());
     VLOG(0) << std::endl << "Delete: " << num_profiles << " "
             << dt_delete.InSecondsF();
 
     Cleanup();
   }
 }