Migrate page_load_metrics out of components.

chrome/browser/page_load_metrics/observers/core_page_load_metrics_observer.h

 // Copyright 2015 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 CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_CORE_PAGE_LOAD_METRICS_OBSERVER_H_
 #define CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_CORE_PAGE_LOAD_METRICS_OBSERVER_H_
 
-#include "components/page_load_metrics/browser/page_load_metrics_observer.h"
+#include "chrome/browser/page_load_metrics/page_load_metrics_observer.h"
 
 namespace internal {
 
 // NOTE: Some of these histograms are separated into a separate histogram
 // specified by the ".Background" suffix. For these events, we put them into the
 // background histogram if the web contents was ever in the background from
 // navigation start to the event in question.
 extern const char kHistogramCommit[];
 extern const char kHistogramFirstLayout[];
 extern const char kHistogramFirstTextPaint[];
@@ skipping 78 matching lines @@
   void RecordRappor(const page_load_metrics::PageLoadTiming& timing,
                     const page_load_metrics::PageLoadExtraInfo& info);
 
   ui::PageTransition transition_;
   bool initiated_by_user_gesture_;
 
   DISALLOW_COPY_AND_ASSIGN(CorePageLoadMetricsObserver);
 };
 
 #endif  // CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_CORE_PAGE_LOAD_METRICS_OBSERVER_H_