Ash Tray: Update Do not disturb mode button tooltip to include state.

The updated tooltip will include "Do not disturb is {on/off}", making it more
consistent with the other tooltip buttons.

BUG=1002471

Change-Id: I2cb41dc89aa1bf133dd77640340cc0c140a8b96a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1795306Reviewed-by: Ahmed Mehfooz <amehfooz@chromium.org>
Commit-Queue: Tim Song <tengs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#695808}

ash/ash_strings.grd

@@ -583,7 +583,13 @@ This file contains the strings for ash.
         Notifications
       </message>
       <message name="IDS_ASH_STATUS_TRAY_NOTIFICATIONS_TOGGLE_TOOLTIP" desc="The tooltip text of the button that toggles Do-not-disturb state for notifications">
-        Toggle Do not disturb
+        Toggle Do not disturb. <ph name="STATE_TEXT">$1<ex>Do not disturb is on.</ex></ph>
+      </message>
+      <message name="IDS_ASH_STATUS_TRAY_NOTIFICATIONS_DO_NOT_DISTURB_ON_STATE" desc="The tooltip text indicating that Do-not-disturb mode is on.">
+        Do not disturb is on.
+      </message>
+      <message name="IDS_ASH_STATUS_TRAY_NOTIFICATIONS_DO_NOT_DISTURB_OFF_STATE" desc="The tooltip text indicating that Do-not-disturb mode is off.">
+        Do not disturb is off.
       </message>
       <message name="IDS_ASH_STATUS_TRAY_NOTIFICATIONS_SETTINGS_ON_TOOLTIP" desc="The tooltip text of the button that shows notification settings. Used when all notifications are enabled.">
         Show notification settings. Notifications are on

ash/system/unified/quiet_mode_feature_pod_controller.cc

@@ -41,8 +41,9 @@ FeaturePodButton* QuietModeFeaturePodController::CreateButton() {
       !Shell::Get()->session_controller()->IsScreenLocked());
   button_->SetLabel(
       l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_NOTIFICATIONS_LABEL));
-  button_->SetIconTooltip(l10n_util::GetStringUTF16(
-      IDS_ASH_STATUS_TRAY_NOTIFICATIONS_TOGGLE_TOOLTIP));
+  button_->SetIconTooltip(l10n_util::GetStringFUTF16(
+      IDS_ASH_STATUS_TRAY_NOTIFICATIONS_TOGGLE_TOOLTIP,
+      GetQuietModeStateTooltip()));
   button_->ShowDetailedViewArrow();
   NotifierSettingsController::Get()->AddNotifierSettingsObserver(this);
   OnQuietModeChanged(MessageCenter::Get()->IsQuietMode());
@@ -72,6 +73,9 @@ SystemTrayItemUmaType QuietModeFeaturePodController::GetUmaType() const {
 
 void QuietModeFeaturePodController::OnQuietModeChanged(bool in_quiet_mode) {
   button_->SetToggled(in_quiet_mode);
+  button_->SetIconTooltip(l10n_util::GetStringFUTF16(
+      IDS_ASH_STATUS_TRAY_NOTIFICATIONS_TOGGLE_TOOLTIP,
+      GetQuietModeStateTooltip()));
 
   if (in_quiet_mode) {
     button_->SetSubLabel(l10n_util::GetStringUTF16(
@@ -109,4 +113,11 @@ void QuietModeFeaturePodController::OnNotifiersUpdated(
   }
 }
 
+base::string16 QuietModeFeaturePodController::GetQuietModeStateTooltip() {
+  return l10n_util::GetStringUTF16(
+      MessageCenter::Get()->IsQuietMode()
+          ? IDS_ASH_STATUS_TRAY_NOTIFICATIONS_DO_NOT_DISTURB_ON_STATE
+          : IDS_ASH_STATUS_TRAY_NOTIFICATIONS_DO_NOT_DISTURB_OFF_STATE);
+}
+
 }  // namespace ash

ash/system/unified/quiet_mode_feature_pod_controller.h

@@ -42,6 +42,8 @@ class ASH_EXPORT QuietModeFeaturePodController
       const std::vector<NotifierMetadata>& notifiers) override;
 
  private:
+  base::string16 GetQuietModeStateTooltip();
+
   UnifiedSystemTrayController* const tray_controller_;
 
   FeaturePodButton* button_ = nullptr;