Make the spell checker session static

Change-Id: I66d51f33e005f46465232d3fc460cda0609609ea
diff --git a/api/current.txt b/api/current.txt
index 27787b5..b8487a9 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -18463,7 +18463,7 @@
     field public static final java.lang.String SERVICE_INTERFACE = "android.service.textservice.SpellCheckerService";
   }
 
-  public abstract class SpellCheckerService.Session {
+  public static abstract class SpellCheckerService.Session {
     ctor public SpellCheckerService.Session();
     method public android.os.Bundle getBundle();
     method public java.lang.String getLocale();
diff --git a/core/java/android/service/textservice/SpellCheckerService.java b/core/java/android/service/textservice/SpellCheckerService.java
index 3e2e38e..b96099e 100644
--- a/core/java/android/service/textservice/SpellCheckerService.java
+++ b/core/java/android/service/textservice/SpellCheckerService.java
@@ -66,7 +66,7 @@
     /**
      * This abstract class should be overridden by a concrete implementation of a spell checker.
      */
-    public abstract class Session {
+    public static abstract class Session {
         private InternalISpellCheckerSession mInternalSession;
 
         /**