ART: Move JNI files to runtime/jni/ .

Test: Rely on TreeHugger.
Change-Id: I9cae11191ef1567ae9453be498882a7767285140
diff --git a/runtime/jni/jni_env_ext-inl.h b/runtime/jni/jni_env_ext-inl.h
new file mode 100644
index 0000000..7609a9e
--- /dev/null
+++ b/runtime/jni/jni_env_ext-inl.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_RUNTIME_JNI_JNI_ENV_EXT_INL_H_
+#define ART_RUNTIME_JNI_JNI_ENV_EXT_INL_H_
+
+#include "jni_env_ext.h"
+
+#include "mirror/object.h"
+
+namespace art {
+
+template<typename T>
+inline T JNIEnvExt::AddLocalReference(ObjPtr<mirror::Object> obj) {
+  std::string error_msg;
+  IndirectRef ref = locals_.Add(local_ref_cookie_, obj, &error_msg);
+  if (UNLIKELY(ref == nullptr)) {
+    // This is really unexpected if we allow resizing local IRTs...
+    LOG(FATAL) << error_msg;
+    UNREACHABLE();
+  }
+
+  // TODO: fix this to understand PushLocalFrame, so we can turn it on.
+  if (false) {
+    if (check_jni_) {
+      size_t entry_count = locals_.Capacity();
+      if (entry_count > 16) {
+        locals_.Dump(LOG_STREAM(WARNING) << "Warning: more than 16 JNI local references: "
+                                        << entry_count << " (most recent was a "
+                                        << mirror::Object::PrettyTypeOf(obj) << ")\n");
+      // TODO: LOG(FATAL) in a later release?
+      }
+    }
+  }
+
+  return reinterpret_cast<T>(ref);
+}
+
+}  // namespace art
+
+#endif  // ART_RUNTIME_JNI_JNI_ENV_EXT_INL_H_