Javadoc for ACTION_SCREEN_<ON|OFF> to indicate they cannot be registered in the manifest.

Change-Id: Ic97a36498628f7f249b6776df455e01aaa995ae4
diff --git a/core/java/android/content/Intent.java b/core/java/android/content/Intent.java
index 3222b2b..8632db1 100644
--- a/core/java/android/content/Intent.java
+++ b/core/java/android/content/Intent.java
@@ -1512,6 +1512,10 @@
      * </p><p>
      * See {@link android.os.PowerManager#isInteractive} for details.
      * </p>
+     * You <em>cannot</em> receive this through components declared in
+     * manifests, only by explicitly registering for it with
+     * {@link Context#registerReceiver(BroadcastReceiver, IntentFilter)
+     * Context.registerReceiver()}.
      *
      * <p class="note">This is a protected intent that can only be sent
      * by the system.
@@ -1532,6 +1536,10 @@
      * </p><p>
      * See {@link android.os.PowerManager#isInteractive} for details.
      * </p>
+     * You <em>cannot</em> receive this through components declared in
+     * manifests, only by explicitly registering for it with
+     * {@link Context#registerReceiver(BroadcastReceiver, IntentFilter)
+     * Context.registerReceiver()}.
      *
      * <p class="note">This is a protected intent that can only be sent
      * by the system.
@@ -1569,7 +1577,7 @@
 
     /**
      * Broadcast Action: The current time has changed.  Sent every
-     * minute.  You can <em>not</em> receive this through components declared
+     * minute.  You <em>cannot</em> receive this through components declared
      * in manifests, only by explicitly registering for it with
      * {@link Context#registerReceiver(BroadcastReceiver, IntentFilter)
      * Context.registerReceiver()}.
@@ -1915,7 +1923,7 @@
      * appropriately.
      *
      * <p class="note">
-     * You can <em>not</em> receive this through components declared
+     * You <em>cannot</em> receive this through components declared
      * in manifests, only by explicitly registering for it with
      * {@link Context#registerReceiver(BroadcastReceiver, IntentFilter)
      * Context.registerReceiver()}.
@@ -1942,7 +1950,7 @@
      * contents of the Intent.
      *
      * <p class="note">
-     * You can <em>not</em> receive this through components declared
+     * You <em>cannot</em> receive this through components declared
      * in manifests, only by explicitly registering for it with
      * {@link Context#registerReceiver(BroadcastReceiver, IntentFilter)
      * Context.registerReceiver()}.  See {@link #ACTION_BATTERY_LOW},