Enable timer notification by default. We can disable the feature by overriding...

Enable timer notification by default. We can disable the feature by overriding the flag to false with finch.

Bug: b:110107505
Change-Id: Ide23cebd82ec2a51727abf6b87b408c98623aed3
Reviewed-on: https://chromium-review.googlesource.com/1251631
Commit-Queue: Li Lin <llin@chromium.org>
Reviewed-by: Xiaohui Chen <xiaohuic@chromium.org>
Cr-Commit-Position: refs/heads/master@{#595621}

chromeos/services/assistant/assistant_manager_service_impl.cc

@@ -51,7 +51,7 @@ constexpr char kScreenBrightnessDeviceSettingId[] = "BRIGHTNESS_LEVEL";
 constexpr char kTimerFireNotificationGroupId[] = "assistant/timer_fire";
 constexpr char kQueryDeeplinkPrefix[] = "googleassistant://send-query?q=";
 constexpr base::Feature kAssistantTimerNotificationFeature{
-    "ChromeOSAssistantTimerNotification", base::FEATURE_DISABLED_BY_DEFAULT};
+    "ChromeOSAssistantTimerNotification", base::FEATURE_ENABLED_BY_DEFAULT};
 
 constexpr float kDefaultSliderStep = 0.1f;
 }  // namespace