Fixs the incorrect message for SecurityException

when injecting a Key, Pointer and Trackball events into the UI across
applications, the corresponding methods throw SecurityException with
incorrect permission message.
INJECT EVENT permission should be INJECT_EVENTS

Author: csignalcraft

services/java/com/android/server/WindowManagerService.java

@@ -5285,7 +5285,7 @@ public boolean injectKeyEvent(KeyEvent ev, boolean sync) {
         switch (result) {
             case INJECT_NO_PERMISSION:
                 throw new SecurityException(
-                        "Injecting to another application requires INJECT_EVENT permission");
+                        "Injecting to another application requires INJECT_EVENTS permission");
             case INJECT_SUCCEEDED:
                 return true;
         }
@@ -5313,7 +5313,7 @@ public boolean injectPointerEvent(MotionEvent ev, boolean sync) {
         switch (result) {
             case INJECT_NO_PERMISSION:
                 throw new SecurityException(
-                        "Injecting to another application requires INJECT_EVENT permission");
+                        "Injecting to another application requires INJECT_EVENTS permission");
             case INJECT_SUCCEEDED:
                 return true;
         }
@@ -5341,7 +5341,7 @@ public boolean injectTrackballEvent(MotionEvent ev, boolean sync) {
         switch (result) {
             case INJECT_NO_PERMISSION:
                 throw new SecurityException(
-                        "Injecting to another application requires INJECT_EVENT permission");
+                        "Injecting to another application requires INJECT_EVENTS permission");
             case INJECT_SUCCEEDED:
                 return true;
         }