UKM Sync Observer

ios/chrome/browser/metrics/ios_chrome_metrics_service_client.mm

 // 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 "ios/chrome/browser/metrics/ios_chrome_metrics_service_client.h"
 
 #include <stdint.h>
 
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/process/process_metrics.h"
 #include "base/rand_util.h"
 #include "base/strings/string16.h"
 #include "base/threading/platform_thread.h"
+#include "components/browser_sync/profile_sync_service.h"
 #include "components/crash/core/common/crash_keys.h"
 #include "components/history/core/browser/history_service.h"
 #include "components/keyed_service/core/service_access_type.h"
 #include "components/metrics/call_stack_profile_metrics_provider.h"
 #include "components/metrics/drive_metrics_provider.h"
 #include "components/metrics/metrics_pref_names.h"
 #include "components/metrics/metrics_reporting_default_state.h"
 #include "components/metrics/metrics_service.h"
 #include "components/metrics/net/cellular_logic_helper.h"
 #include "components/metrics/net/net_metrics_log_uploader.h"
@@ skipping 14 matching lines @@
 #include "components/variations/variations_associated_data.h"
 #include "components/version_info/version_info.h"
 #include "ios/chrome/browser/application_context.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state_manager.h"
 #include "ios/chrome/browser/chrome_paths.h"
 #include "ios/chrome/browser/google/google_brand.h"
 #include "ios/chrome/browser/history/history_service_factory.h"
 #include "ios/chrome/browser/metrics/ios_chrome_stability_metrics_provider.h"
 #include "ios/chrome/browser/metrics/mobile_session_shutdown_metrics_provider.h"
 #include "ios/chrome/browser/signin/ios_chrome_signin_status_metrics_provider_delegate.h"
+#include "ios/chrome/browser/sync/ios_chrome_profile_sync_service_factory.h"
 #include "ios/chrome/browser/sync/ios_chrome_sync_client.h"
 #include "ios/chrome/browser/tab_parenting_global_observer.h"
 #include "ios/chrome/browser/tabs/tab_model_list.h"
 #include "ios/chrome/common/channel_info.h"
 #include "ios/web/public/web_thread.h"
 
 IOSChromeMetricsServiceClient::IOSChromeMetricsServiceClient(
     metrics::MetricsStateManager* state_manager)
     : metrics_state_manager_(state_manager),
       stability_metrics_provider_(nullptr),
@@ skipping 253 matching lines @@
   omnibox_url_opened_subscription_ =
       OmniboxEventGlobalTracker::GetInstance()->RegisterCallback(
           base::Bind(&IOSChromeMetricsServiceClient::OnURLOpenedFromOmnibox,
                      base::Unretained(this)));
 
   std::vector<ios::ChromeBrowserState*> loaded_browser_states =
       GetApplicationContext()
           ->GetChromeBrowserStateManager()
           ->GetLoadedBrowserStates();
   for (ios::ChromeBrowserState* browser_state : loaded_browser_states) {
-    RegisterForHistoryDeletions(browser_state);
+    RegisterForBrowserStateEvents(browser_state);
   }
 }
 
-void IOSChromeMetricsServiceClient::RegisterForHistoryDeletions(
+void IOSChromeMetricsServiceClient::RegisterForBrowserStateEvents(
     ios::ChromeBrowserState* browser_state) {
   history::HistoryService* history_service =
       ios::HistoryServiceFactory::GetForBrowserState(
           browser_state, ServiceAccessType::IMPLICIT_ACCESS);
   ObserveServiceForDeletions(history_service);
+  browser_sync::ProfileSyncService* sync =
+      IOSChromeProfileSyncServiceFactory::GetInstance()->GetForBrowserState(
+          browser_state);
+  ObserveServiceForSyncDisables(static_cast<syncer::SyncService*>(sync));
 }
 
 void IOSChromeMetricsServiceClient::OnTabParented(web::WebState* web_state) {
   metrics_service_->OnApplicationNotIdle();
 }
 
 void IOSChromeMetricsServiceClient::OnURLOpenedFromOmnibox(OmniboxLog* log) {
   metrics_service_->OnApplicationNotIdle();
 }
 
 metrics::EnableMetricsDefault
 IOSChromeMetricsServiceClient::GetMetricsReportingDefaultState() {
   return metrics::GetMetricsReportingDefaultState(
       GetApplicationContext()->GetLocalState());
 }
 
 void IOSChromeMetricsServiceClient::OnHistoryDeleted() {
   if (ukm_service_)
     ukm_service_->Purge();
 }
+
+void IOSChromeMetricsServiceClient::OnSyncPrefsChanged(bool must_purge) {
+  if (!ukm_service_)
+    return;
+  if (must_purge) {
+    ukm_service_->Purge();
+    ukm_service_->ResetClientId();
+  }
+  // Signal service manager to enable/disable UKM based on new state.
+  UpdateRunningServices();
+}