[iOS] Add separate title and message texts to sign-in notification.

Previously, we only had the ability to include a title text in an
infobar. Following crrev.com/c/2521619 we are able to include both.

This patch updates sign-in notification infobar to include a title,
"Signed in to Chrome" and the user email as the message.

Bug: 1145592
Change-Id: Ibd1b91737d3cfd6d30ea15cdec5fd11f49cba268
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2526105Reviewed-by: Chris Lu <thegreenfrog@chromium.org>
Commit-Queue: Nohemi Fernandez <fernandex@chromium.org>
Cr-Commit-Position: refs/heads/master@{#825741}

ios/chrome/browser/ui/authentication/signin_notification_infobar_delegate.h

@@ -44,6 +44,7 @@ class SigninNotificationInfoBarDelegate : public ConfirmInfoBarDelegate {
   InfoBarIdentifier GetIdentifier() const override;
 
   // ConfirmInfoBarDelegate implementation.
+  base::string16 GetTitleText() const override;
   base::string16 GetMessageText() const override;
   int GetButtons() const override;
   base::string16 GetButtonLabel(InfoBarButton button) const override;
@@ -52,6 +53,7 @@ class SigninNotificationInfoBarDelegate : public ConfirmInfoBarDelegate {
 
  private:
   gfx::Image icon_;
+  base::string16 title_;
   base::string16 message_;
   base::string16 button_text_;
 

ios/chrome/browser/ui/authentication/signin_notification_infobar_delegate.mm

@@ -78,14 +78,15 @@ SigninNotificationInfoBarDelegate::SigninNotificationInfoBarDelegate(
 
   if (base::FeatureList::IsEnabled(
           signin::kSigninNotificationInfobarUsernameInTitle)) {
-    message_ = base::SysNSStringToUTF16(l10n_util::GetNSStringF(
+    title_ = base::SysNSStringToUTF16(l10n_util::GetNSStringF(
         IDS_IOS_SIGNIN_ACCOUNT_NOTIFICATION_TITLE_WITH_USERNAME,
         base::SysNSStringToUTF16(identity.userFullName)));
   } else {
-    message_ = base::SysNSStringToUTF16(
+    title_ = base::SysNSStringToUTF16(
         l10n_util::GetNSString(IDS_IOS_SIGNIN_ACCOUNT_NOTIFICATION_TITLE));
   }
 
+  message_ = base::SysNSStringToUTF16(identity.userEmail);
   button_text_ =
       base::SysNSStringToUTF16(l10n_util::GetNSString(IDS_IOS_SETTINGS_TITLE));
 }
@@ -97,6 +98,10 @@ SigninNotificationInfoBarDelegate::GetIdentifier() const {
   return RE_SIGN_IN_INFOBAR_DELEGATE_IOS;
 }
 
+base::string16 SigninNotificationInfoBarDelegate::GetTitleText() const {
+  return title_;
+}
+
 base::string16 SigninNotificationInfoBarDelegate::GetMessageText() const {
   return message_;
 }