Add action to launch webview implementation settings

Bug: 28554048
Change-Id: I5ccdf5350c216949890d79b2b306b935a5949824
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index 700c2d2..a78a995 100755
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -1267,6 +1267,16 @@
     public static final String ACTION_VR_LISTENER_SETTINGS
             = "android.settings.VR_LISTENER_SETTINGS";
 
+    /**
+     * Activity Action: Allows user to select current webview implementation.
+     * <p>
+     * Input: Nothing.
+     * <p>
+     * Output: Nothing.
+     */
+    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
+    public static final String ACTION_WEBVIEW_SETTINGS = "android.settings.WEBVIEW_SETTINGS";
+
     // End of Intent actions for Settings
 
     /**