Reland: Buffer cross frame paint timing updates.

chrome/browser/page_load_metrics/page_load_metrics_util.cc

 // 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.
 
 #include "chrome/browser/page_load_metrics/page_load_metrics_util.h"
 
 #include <algorithm>
 
 #include "chrome/common/page_load_metrics/page_load_timing.h"
-#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
-#include "url/gurl.h"
 
 namespace page_load_metrics {
 
 namespace {
 
 bool IsBackgroundAbort(const PageLoadExtraInfo& info) {
   if (!info.started_in_foreground || !info.first_background_time)
     return false;
 
   if (!info.page_end_time)
@@ skipping 16 matching lines @@
       return ABORT_CLOSE;
     case END_OTHER:
       return ABORT_OTHER;
     default:
       return ABORT_NONE;
   }
 }
 
 }  // namespace
 
-base::Optional<std::string> GetGoogleHostnamePrefix(const GURL& url) {
-  const size_t registry_length =
-      net::registry_controlled_domains::GetRegistryLength(
-          url,
-
-          // Do not include unknown registries (registries that don't have any
-          // matches in effective TLD names).
-          net::registry_controlled_domains::EXCLUDE_UNKNOWN_REGISTRIES,
-
-          // Do not include private registries, such as appspot.com. We don't
-          // want to match URLs like www.google.appspot.com.
-          net::registry_controlled_domains::EXCLUDE_PRIVATE_REGISTRIES);
-
-  const base::StringPiece hostname = url.host_piece();
-  if (registry_length == 0 || registry_length == std::string::npos ||
-      registry_length >= hostname.length()) {
-    return base::Optional<std::string>();
-  }
-
-  // Removes the tld and the preceding dot.
-  const base::StringPiece hostname_minus_registry =
-      hostname.substr(0, hostname.length() - (registry_length + 1));
-
-  if (hostname_minus_registry == "google")
-    return std::string("");
-
-  if (!base::EndsWith(hostname_minus_registry, ".google",
-                      base::CompareCase::INSENSITIVE_ASCII)) {
-    return base::Optional<std::string>();
-  }
-
-  return std::string(hostname_minus_registry.substr(
-      0, hostname_minus_registry.length() - strlen(".google")));
-}
-
-bool IsGoogleHostname(const GURL& url) {
-  return GetGoogleHostnamePrefix(url).has_value();
-}
-
 bool WasStartedInForegroundOptionalEventInForeground(
     const base::Optional<base::TimeDelta>& event,
     const PageLoadExtraInfo& info) {
   return info.started_in_foreground && event &&
          (!info.first_background_time ||
           event.value() <= info.first_background_time.value());
 }
 
 PageAbortInfo GetPageAbortInfo(const PageLoadExtraInfo& info) {
   if (IsBackgroundAbort(info)) {
@@ skipping 28 matching lines @@
   // where the Chrome app is backgrounded before the page load is complete, on
   // platforms where Chrome may be killed once it goes into the background
   // (Android). In these cases, we use the app background time as the 'end
   // time'.
   if (!time_on_page && !app_background_time.is_null()) {
     time_on_page = app_background_time - info.navigation_start;
   }
   return time_on_page;
 }
 
-base::Optional<base::TimeDelta> OptionalMin(
-    const base::Optional<base::TimeDelta>& a,
-    const base::Optional<base::TimeDelta>& b) {
-  if (a && !b)
-    return a;
-  if (b && !a)
-    return b;
-  if (!a && !b)
-    return a;  // doesn't matter which
-  return base::Optional<base::TimeDelta>(std::min(a.value(), b.value()));
-}
-
 bool DidObserveLoadingBehaviorInAnyFrame(
     const page_load_metrics::PageLoadExtraInfo& info,
     blink::WebLoadingBehaviorFlag behavior) {
   const int all_frame_loading_behavior_flags =
       info.main_frame_metadata.behavior_flags |
       info.subframe_metadata.behavior_flags;
 
   return (all_frame_loading_behavior_flags & behavior) != 0;
 }
 
 }  // namespace page_load_metrics