Introduce ACTION_QUICK_CLOCK for the QS time tile.

By default it will still go to Date/Time Settings (see
change Ib430f0c5) but 3Ps can hook it for other useful
things.

Bug: 7264806
Change-Id: Ic561dbeb5cc0738372c079b3eb52749c44b3cf0d
diff --git a/core/java/android/content/Intent.java b/core/java/android/content/Intent.java
index d4f6c06..c14a703 100644
--- a/core/java/android/content/Intent.java
+++ b/core/java/android/content/Intent.java
@@ -2414,6 +2414,12 @@
     public static final String ACTION_USER_INFO_CHANGED =
             "android.intent.action.USER_INFO_CHANGED";
 
+    /**
+     * Sent when the user taps on the clock widget in the system's "quick settings" area.
+     */
+    public static final String ACTION_QUICK_CLOCK =
+            "android.intent.action.QUICK_CLOCK";
+
     // ---------------------------------------------------------------------
     // ---------------------------------------------------------------------
     // Standard intent categories (see addCategory()).