Buffer cross frame paint timing updates.

chrome/browser/page_load_metrics/page_load_metrics_util.cc

Index: chrome/browser/page_load_metrics/page_load_metrics_util.cc
diff --git a/chrome/browser/page_load_metrics/page_load_metrics_util.cc b/chrome/browser/page_load_metrics/page_load_metrics_util.cc
index 22ec5505e23665708b80541e24c2f059047659b0..ab1acc1ded52fdcc6c75c52bf01f18452cb6c8a8 100644
--- a/chrome/browser/page_load_metrics/page_load_metrics_util.cc
+++ b/chrome/browser/page_load_metrics/page_load_metrics_util.cc
@@ -7,8 +7,6 @@
 #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 {
 
@@ -45,45 +43,6 @@ PageAbortReason GetAbortReasonForEndReason(PageEndReason end_reason) {
 
 }  // 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) {
@@ -132,18 +91,6 @@ base::Optional<base::TimeDelta> GetInitialForegroundDuration(
   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) {