Remove some global headers.

Removing:
- JniInvocation.h
- ScopedLocalFrame.h

Now that all usage is cleaned up.

libnativehelper now exports "include" as well so that
its headers can be cleaned up in the same way.

Test: none
Bug: 63762847
Change-Id: Iee8f59542dc1c80e2e262d2faf4eea829426a0d8
diff --git a/toStringArray.cpp b/toStringArray.cpp
index f2b0add..3ccc053 100644
--- a/toStringArray.cpp
+++ b/toStringArray.cpp
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#include "JniConstants.h"
-#include "toStringArray.h"
+#include <nativehelper/JniConstants.h>
+#include <nativehelper/toStringArray.h>
 
 jobjectArray newStringArray(JNIEnv* env, size_t count) {
     return env->NewObjectArray(count, JniConstants::stringClass, NULL);