ui: Move android C++ source files into base/android directory.

ui/android/ui_jni_registrar.h

Index: ui/android/ui_jni_registrar.h
diff --git a/ui/android/ui_jni_registrar.h b/ui/android/ui_jni_registrar.h
deleted file mode 100644
index f40ed407823529e93165699b30a39a2bf21dc62b..0000000000000000000000000000000000000000
--- a/ui/android/ui_jni_registrar.h
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef UI_ANDROID_UI_JNI_REGISTRAR_H_
-#define UI_ANDROID_UI_JNI_REGISTRAR_H_
-
-#include <jni.h>
-
-#include "ui/base/ui_export.h"
-
-namespace ui {
-namespace android {
-
-// Register all JNI bindings necessary for chrome.
-UI_EXPORT bool RegisterJni(JNIEnv* env);
-
-}  // namespace android
-}  // namespace ui
-
-#endif  // UI_ANDROID_UI_JNI_REGISTRAR_H_