Merge "Cache resolved details about remote callers." into qt-dev

core/java/android/content/ContentProvider.java

@@ -820,6 +820,7 @@ public abstract class ContentProvider implements ContentInterface, ComponentCall
     private String setCallingPackage(String callingPackage) {
         final String original = mCallingPackage.get();
         mCallingPackage.set(callingPackage);
+        onCallingPackageChanged();
         return original;
     }
 
@@ -845,6 +846,15 @@ public abstract class ContentProvider implements ContentInterface, ComponentCall
         return pkg;
     }
 
+    /** {@hide} */
+    public final @Nullable String getCallingPackageUnchecked() {
+        return mCallingPackage.get();
+    }
+
+    /** {@hide} */
+    public void onCallingPackageChanged() {
+    }
+
     /**
      * Opaque token representing the identity of an incoming IPC.
      */