Reland: Buffer cross frame paint timing updates.

chrome/browser/page_load_metrics/page_load_metrics_util.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_PAGE_LOAD_METRICS_UTIL_H_
 #define CHROME_BROWSER_PAGE_LOAD_METRICS_PAGE_LOAD_METRICS_UTIL_H_
 
 #include "base/metrics/histogram_macros.h"
 #include "base/optional.h"
 #include "base/time/time.h"
 #include "chrome/browser/page_load_metrics/page_load_metrics_observer.h"
+#include "chrome/common/page_load_metrics/page_load_metrics_util.h"
 #include "third_party/WebKit/public/platform/WebLoadingBehaviorFlag.h"
 
 // Up to 10 minutes, with 100 buckets.
 #define PAGE_LOAD_HISTOGRAM(name, sample)                           \
   UMA_HISTOGRAM_CUSTOM_TIMES(name, sample,                          \
                              base::TimeDelta::FromMilliseconds(10), \
                              base::TimeDelta::FromMinutes(10), 100)
 
 // Up to 1 hour, with 100 buckets.
 #define PAGE_LOAD_LONG_HISTOGRAM(name, sample)                      \
@@ skipping 89 matching lines @@
 // * the load of the main resource fails
 // * the page load is stopped
 // * the tab hosting the page is closed
 // * the render process hosting the page goes away
 // * a new navigation which later commits is initiated in the same tab
 // * the tab hosting the page is backgrounded
 base::Optional<base::TimeDelta> GetInitialForegroundDuration(
     const PageLoadExtraInfo& info,
     base::TimeTicks app_background_time);
 
-// Returns the minimum value of the optional TimeDeltas, if both values are
-// set. Otherwise, if one value is set, returns that value. Otherwise, returns
-// an unset value.
-base::Optional<base::TimeDelta> OptionalMin(
-    const base::Optional<base::TimeDelta>& a,
-    const base::Optional<base::TimeDelta>& b);
-
 // Whether the given loading behavior was observed in any frame (either the main
 // frame or a subframe).
 bool DidObserveLoadingBehaviorInAnyFrame(
     const page_load_metrics::PageLoadExtraInfo& info,
     blink::WebLoadingBehaviorFlag behavior);
 
-// Whether the given url has a google hostname.
-bool IsGoogleHostname(const GURL& url);
-
-// If the given hostname is a google hostname, returns the portion of the
-// hostname before the google hostname. Otherwise, returns an unset optional
-// value.
-//
-// For example:
-//   https://example.com/foo => returns an unset optional value
-//   https://google.com/foo => returns ''
-//   https://www.google.com/foo => returns 'www'
-//   https://news.google.com/foo => returns 'news'
-//   https://a.b.c.google.com/foo => returns 'a.b.c'
-base::Optional<std::string> GetGoogleHostnamePrefix(const GURL& url);
-
 }  // namespace page_load_metrics
 
 #endif  // CHROME_BROWSER_PAGE_LOAD_METRICS_PAGE_LOAD_METRICS_UTIL_H_