[Merge M60] arc: Provide metric to monitor Play Store window is shown time.

chrome/browser/ui/ash/launcher/arc_app_window_launcher_controller.cc

Index: chrome/browser/ui/ash/launcher/arc_app_window_launcher_controller.cc
diff --git a/chrome/browser/ui/ash/launcher/arc_app_window_launcher_controller.cc b/chrome/browser/ui/ash/launcher/arc_app_window_launcher_controller.cc
index 876e5910982467bcca8f2bc5348d9afdeca5e2c4..411fd51ff79de1f75b95c1c4d1d568d151d980f2 100644
--- a/chrome/browser/ui/ash/launcher/arc_app_window_launcher_controller.cc
+++ b/chrome/browser/ui/ash/launcher/arc_app_window_launcher_controller.cc
@@ -16,7 +16,9 @@
 #include "ash/wm_window.h"
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
+#include "chrome/browser/chromeos/arc/arc_optin_uma.h"
 #include "chrome/browser/chromeos/arc/arc_util.h"
+#include "chrome/browser/chromeos/arc/policy/arc_policy_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/app_list/arc/arc_app_utils.h"
 #include "chrome/browser/ui/ash/launcher/arc_app_window.h"
@@ -150,6 +152,8 @@ ArcAppWindowLauncherController::ArcAppWindowLauncherController(
   if (arc::IsArcAllowedForProfile(owner->profile())) {
     observed_profile_ = owner->profile();
     StartObserving(observed_profile_);
+
+    arc::ArcSessionManager::Get()->AddObserver(this);
   }
 }
 
@@ -158,6 +162,8 @@ ArcAppWindowLauncherController::~ArcAppWindowLauncherController() {
     StopObserving(observed_profile_);
   if (observing_shell_)
     ash::Shell::Get()->RemoveShellObserver(this);
+  if (arc::ArcSessionManager::Get())
+    arc::ArcSessionManager::Get()->RemoveObserver(this);
 }
 
 void ArcAppWindowLauncherController::ActiveUserChanged(
@@ -491,6 +497,16 @@ ArcAppWindowLauncherController::ControllerForWindow(aura::Window* window) {
   return nullptr;
 }
 
+void ArcAppWindowLauncherController::OnArcOptInManagementCheckStarted() {
+  // In case of retry this time is updated and we measure only successful run.
+  opt_in_management_check_start_time_ = base::Time::Now();
+}
+
+void ArcAppWindowLauncherController::OnArcSessionStopped(
+    arc::ArcStopReason stop_reason) {
+  opt_in_management_check_start_time_ = base::Time();
+}
+
 void ArcAppWindowLauncherController::OnWindowActivated(
     aura::client::ActivationChangeObserver::ActivationReason reason,
     aura::Window* gained_active,
@@ -576,6 +592,14 @@ void ArcAppWindowLauncherController::RegisterApp(
   owner()->SetItemStatus(shelf_id, ash::STATUS_RUNNING);
   app_window->SetController(controller);
   app_window->set_shelf_id(shelf_id);
+
+  if (!opt_in_management_check_start_time_.is_null() &&
+      app_window_info->app_shelf_id().app_id() == arc::kPlayStoreAppId) {
+    arc::UpdatePlayStoreShowTime(
+        base::Time::Now() - opt_in_management_check_start_time_,
+        arc::policy_util::IsAccountManaged(owner()->profile()));
+    opt_in_management_check_start_time_ = base::Time();
+  }
 }
 
 void ArcAppWindowLauncherController::UnregisterApp(