Code refactoring: remove include/private/media/ directory.

Keep the existing code pattern that private .h files are named as
XXXPriv.h and stored in media/ndk/ directory.

Bug: 149835919
Test: AImageReaderWindowHandleTest
Change-Id: Iec99e8ad2c9e4bd7cf96f685d91b47e8fb80c9a8
diff --git a/media/ndk/NdkImagePriv.h b/media/ndk/NdkImagePriv.h
index 0e8cbcb..b019448 100644
--- a/media/ndk/NdkImagePriv.h
+++ b/media/ndk/NdkImagePriv.h
@@ -30,6 +30,18 @@
 
 using namespace android;
 
+// Formats not listed in the public API, but still available to AImageReader
+enum AIMAGE_PRIVATE_FORMATS {
+    /**
+     * Unprocessed implementation-dependent raw
+     * depth measurements, opaque with 16 bit
+     * samples.
+     *
+     */
+
+    AIMAGE_FORMAT_RAW_DEPTH = 0x1002,
+};
+
 // TODO: this only supports ImageReader
 struct AImage {
     AImage(AImageReader* reader, int32_t format, uint64_t usage, BufferItem* buffer,
diff --git a/media/ndk/NdkImageReader.cpp b/media/ndk/NdkImageReader.cpp
index c0ceb3d..5d8f0b8 100644
--- a/media/ndk/NdkImageReader.cpp
+++ b/media/ndk/NdkImageReader.cpp
@@ -21,7 +21,6 @@
 
 #include "NdkImagePriv.h"
 #include "NdkImageReaderPriv.h"
-#include <private/media/NdkImage.h>
 
 #include <cutils/atomic.h>
 #include <utils/Log.h>
diff --git a/media/ndk/include/private/media/NdkImage.h b/media/ndk/include/private/media/NdkImage.h
deleted file mode 100644
index 4368a56..0000000
--- a/media/ndk/include/private/media/NdkImage.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright (C) 2019 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 _PRIVATE_MEDIA_NDKIMAGE_H_
-#define _PRIVATE_MEDIA_NDKIMAGE_H_
-// Formats not listed in the public API, but still available to AImageReader
-enum AIMAGE_PRIVATE_FORMATS {
-    /**
-     * Unprocessed implementation-dependent raw
-     * depth measurements, opaque with 16 bit
-     * samples.
-     *
-     */
-
-    AIMAGE_FORMAT_RAW_DEPTH = 0x1002,
-};
-#endif // _PRIVATE_MEDIA_NDKIMAGE
diff --git a/media/ndk/tests/AImageReaderWindowHandleTest.cpp b/media/ndk/tests/AImageReaderWindowHandleTest.cpp
index 5b65064..27864c2 100644
--- a/media/ndk/tests/AImageReaderWindowHandleTest.cpp
+++ b/media/ndk/tests/AImageReaderWindowHandleTest.cpp
@@ -17,10 +17,10 @@
 #include <gtest/gtest.h>
 #include <media/NdkImageReader.h>
 #include <media/NdkImage.h>
-#include <private/media/NdkImage.h>
 #include <mediautils/AImageReaderUtils.h>
 #include <gui/IGraphicBufferProducer.h>
 #include <gui/bufferqueue/1.0/H2BGraphicBufferProducer.h>
+#include <NdkImagePriv.h>
 #include <NdkImageReaderPriv.h>
 #include <vndk/hardware_buffer.h>
 #include <memory>