[iOS][Safety Check] Add UMA metrics to safety check

Add overall interaction metrics (with actions) and individual
metrics for each of the checks.

Bug: 1078782
Change-Id: Ic778e9ef54e9f358e28eab5b4b7ac30a7ad5d99d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2442531Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Commit-Queue: Sean Harrison <harrisonsean@chromium.org>
Cr-Commit-Position: refs/heads/master@{#812912}

ios/chrome/browser/DEPS

@@ -71,6 +71,7 @@ include_rules = [
   "+components/reading_list",
   "+components/rlz",
   "+components/safe_browsing",
+  "+components/safety_check",
   "+components/search",
   "+components/search_engines",
   "+components/search_provider_logos",

ios/chrome/browser/ui/settings/safety_check/safety_check_constants.h

@@ -7,6 +7,24 @@
 
 #import <Foundation/Foundation.h>
 
+// UMA histogram values for Safety check interactions. Some value don't apply to
+// iOS. Note: this should stay in sync with SettingsSafetyCheckInteractions in
+// enums.xml.
+enum class SafetyCheckInteractions {
+  kStarted = 0,
+  kUpdatesRelaunch = 1,
+  kPasswordsManage = 2,
+  kSafeBrowsingManage = 3,
+  kExtensionsReview = 4,
+  kChromeCleanerReboot = 5,
+  kChromeCleanerReview = 6,
+  // New elements go above.
+  kMaxValue = kChromeCleanerReview,
+};
+
+// Address of page with safebrowsing settings pages.
+extern NSString* const kSafeBrowsingSafetyCheckStringURL;
+
 // The NSUserDefaults key for the timestamp of last time safety check found an
 // issue.
 extern NSString* const kTimestampOfLastIssueFoundKey;

ios/chrome/browser/ui/settings/safety_check/safety_check_constants.mm

@@ -8,5 +8,8 @@
 #error "This file requires ARC support."
 #endif
 
+NSString* const kSafeBrowsingSafetyCheckStringURL =
+    @"chrome://settings/syncSetup";
+
 NSString* const kTimestampOfLastIssueFoundKey =
     @"TimestampOfLastSafetyCheckIssueFound";

ios/chrome/browser/ui/settings/safety_check/safety_check_coordinator.mm

@@ -6,6 +6,9 @@
 
 #include "base/mac/foundation_util.h"
 #include "base/memory/scoped_refptr.h"
+#import "base/metrics/histogram_functions.h"
+#include "base/metrics/histogram_macros.h"
+#include "base/metrics/user_metrics.h"
 #include "base/strings/sys_string_conversions.h"
 #include "ios/chrome/browser/application_context.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
@@ -24,6 +27,7 @@
 #import "ios/chrome/browser/ui/settings/elements/enterprise_info_popover_view_controller.h"
 #import "ios/chrome/browser/ui/settings/google_services/google_services_settings_coordinator.h"
 #import "ios/chrome/browser/ui/settings/password/password_issues_coordinator.h"
+#import "ios/chrome/browser/ui/settings/safety_check/safety_check_constants.h"
 #import "ios/chrome/browser/ui/settings/safety_check/safety_check_mediator.h"
 #import "ios/chrome/browser/ui/settings/safety_check/safety_check_navigation_commands.h"
 #import "ios/chrome/browser/ui/settings/safety_check/safety_check_table_view_controller.h"
@@ -124,7 +128,8 @@
 
 - (void)didTapLinkURL:(NSURL*)URL {
   GURL convertedURL = net::GURLWithNSURL(URL);
-  const GURL safeBrowsingURL(kSafeBrowsingStringURL);
+  const GURL safeBrowsingURL(
+      base::SysNSStringToUTF8(kSafeBrowsingSafetyCheckStringURL));
 
   // Take the user to Sync and Google Services page in Bling instead of desktop
   // settings.
@@ -189,6 +194,10 @@
 
 - (void)showSafeBrowsingPreferencePage {
   DCHECK(!self.googleServicesSettingsCoordinator);
+  base::RecordAction(
+      base::UserMetricsAction("Settings.SafetyCheck.ManageSafeBrowsing"));
+  base::UmaHistogramEnumeration("Settings.SafetyCheck.Interactions",
+                                SafetyCheckInteractions::kSafeBrowsingManage);
   self.googleServicesSettingsCoordinator =
       [[GoogleServicesSettingsCoordinator alloc]
           initWithBaseNavigationController:self.baseNavigationController