Initial commit of InputManager and keyboard layout API.

Added a new InputManager service for interacting with input
devices and configuring them.  This will be the focus of
an upcoming refactoring.

Added an API for registering keyboard layouts with the system
based on the use of a broadcast receiver.  Applications can
register their own keyboard layouts simply by declaring a
broadcast receiver in their manifests.

Added the skeleton of a package that will ultimately contain
the keyboard layouts and other input device related resources
that are part of the base system.

Bug: 6110399
Change-Id: Ie01b0ef4adbd5198f6f012e73964bdef3c51805c
diff --git a/core/java/android/content/Context.java b/core/java/android/content/Context.java
index 2902504..ee90ab3 100644
--- a/core/java/android/content/Context.java
+++ b/core/java/android/content/Context.java
@@ -1907,6 +1907,15 @@
     public static final String SERIAL_SERVICE = "serial";
 
     /**
+     * Use with {@link #getSystemService} to retrieve a
+     * {@link android.hardware.input.InputManager} for interacting with input devices.
+     *
+     * @see #getSystemService
+     * @see android.hardware.input.InputManager
+     */
+    public static final String INPUT_SERVICE = "input";
+
+    /**
      * Determine whether the given permission is allowed for a particular
      * process and user ID running in the system.
      *