Use TimeDelta::operator/() more, components/ edition.

Bug: 1104532
Change-Id: If6affe249332caf832f679e7321e1852c25683d7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2354915Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Commit-Queue: Jochen Eisinger <jochen@chromium.org>
Auto-Submit: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#798567}

components/feed/core/common/user_classifier.cc

@@ -285,7 +285,7 @@ double UserClassifier::GetHoursSinceLastTime(Event event) const {
 
   base::TimeDelta since_last_time =
       clock_->Now() - pref_service_->GetTime(GetLastTimeKey(event));
-  return since_last_time.InSecondsF() / 3600;
+  return since_last_time / base::TimeDelta::FromHours(1);
 }
 
 bool UserClassifier::HasLastTime(Event event) const {

components/media_message_center/media_controls_progress_view.cc

@@ -91,7 +91,7 @@ void MediaControlsProgressView::UpdateProgress(
   base::TimeDelta current_position = media_position.GetPosition();
   base::TimeDelta duration = media_position.duration();
 
-  double progress = current_position.InSecondsF() / duration.InSecondsF();
+  double progress = current_position / duration;
   SetBarProgress(progress);
 
   // Time formatting can't yet represent durations greater than 24 hours in

components/ntp_snippets/user_classifier.cc

@@ -361,7 +361,7 @@ double UserClassifier::GetHoursSinceLastTime(Metric metric) const {
   base::TimeDelta since_last_time =
       clock_->Now() - DeserializeTime(pref_service_->GetInt64(
                           kLastTimeKeys[static_cast<int>(metric)]));
-  return since_last_time.InSecondsF() / 3600;
+  return since_last_time / base::TimeDelta::FromHours(1);
 }
 
 bool UserClassifier::HasLastTime(Metric metric) const {

components/omnibox/browser/shortcuts_provider.cc

@@ -386,8 +386,7 @@ int ShortcutsProvider::CalculateScore(
   base::TimeDelta time_passed = base::Time::Now() - shortcut.last_access_time;
   // Clamp to 0 in case time jumps backwards (e.g. due to DST).
   double decay_exponent =
-      std::max(0.0, kLn2 * static_cast<double>(time_passed.InMicroseconds()) /
-                        base::Time::kMicrosecondsPerWeek);
+      std::max(0.0, kLn2 * time_passed / base::TimeDelta::FromDays(7));
 
   // We modulate the decay factor based on how many times the shortcut has been
   // used. Newly created shortcuts decay at full speed; otherwise, decaying by

components/performance_manager/graph/policies/tab_loading_frame_navigation_policy_unittest.cc

@@ -165,8 +165,7 @@ class TabLoadingFrameNavigationPolicyTest
   double GetRelativeTime() {
     base::TimeTicks now = task_environment()->GetMockTickClock()->NowTicks();
     base::TimeDelta elapsed = now - start_;
-    double relative =
-        elapsed.InSecondsF() / policy_->GetMaxTimeoutForTesting().InSecondsF();
+    double relative = elapsed / policy_->GetMaxTimeoutForTesting();
     return relative;
   }
 

components/sync/engine_impl/sync_scheduler_impl_unittest.cc

@@ -1996,7 +1996,7 @@ TEST_F(SyncSchedulerImplTest, PollOnStartUpWithinBoundsAfterLongPause) {
   for (int i = 0; i < 10000; ++i) {
     base::Time result = ComputeLastPollOnStart(last_poll, poll_interval, now);
     base::TimeDelta delay = result + poll_interval - now;
-    double fraction = delay.InSeconds() * 1.0 / poll_interval.InSeconds();
+    double fraction = delay / poll_interval;
     if (fraction > 0.005) {
       found_delay_greater_than_5_permille = true;
     } else {