ART: Move JNI files to runtime/jni/ .

Test: Rely on TreeHugger.
Change-Id: I9cae11191ef1567ae9453be498882a7767285140
diff --git a/compiler/jni/jni_compiler_test.cc b/compiler/jni/jni_compiler_test.cc
index 730a1a6..c643af7 100644
--- a/compiler/jni/jni_compiler_test.cc
+++ b/compiler/jni/jni_compiler_test.cc
@@ -28,8 +28,8 @@
 #include "dex/dex_file.h"
 #include "gtest/gtest.h"
 #include "indirect_reference_table.h"
-#include "java_vm_ext.h"
-#include "jni_internal.h"
+#include "jni/java_vm_ext.h"
+#include "jni/jni_internal.h"
 #include "mirror/class-inl.h"
 #include "mirror/class_loader.h"
 #include "mirror/object-inl.h"