Rename libdexfile external API header.

For consistency with the new header file added in http://r.android.com/867369.

Test: m
Bug: 120978655
Change-Id: I7f3d1575c253028289d57b1a972c1f0bbcc88c7a
diff --git a/libdexfile/external/dex_file_ext.cc b/libdexfile/external/dex_file_ext.cc
index a1a9a52..7bf01a8 100644
--- a/libdexfile/external/dex_file_ext.cc
+++ b/libdexfile/external/dex_file_ext.cc
@@ -39,7 +39,7 @@
 #include <dex/dex_file-inl.h>
 #include <dex/dex_file_loader.h>
 
-#include "art_api/ext_dex_file.h"
+#include "art_api/dex_file_support.h"
 
 extern "C" class ExtDexFileString {
  public:
diff --git a/libdexfile/external/dex_file_supp.cc b/libdexfile/external/dex_file_supp.cc
index 6514c8a..5bd25fc 100644
--- a/libdexfile/external/dex_file_supp.cc
+++ b/libdexfile/external/dex_file_supp.cc
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-#include "art_api/ext_dex_file.h"
+#include "art_api/dex_file_support.h"
 
 namespace art_api {
 namespace dex {
diff --git a/libdexfile/external/include/art_api/ext_dex_file.h b/libdexfile/external/include/art_api/dex_file_support.h
similarity index 96%
rename from libdexfile/external/include/art_api/ext_dex_file.h
rename to libdexfile/external/include/art_api/dex_file_support.h
index 8a1f18d..99d60d1 100644
--- a/libdexfile/external/include/art_api/ext_dex_file.h
+++ b/libdexfile/external/include/art_api/dex_file_support.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018 The Android Open Source Project
+ * 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.
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#ifndef ART_LIBDEXFILE_EXTERNAL_INCLUDE_ART_API_EXT_DEX_FILE_H_
-#define ART_LIBDEXFILE_EXTERNAL_INCLUDE_ART_API_EXT_DEX_FILE_H_
+#ifndef ART_LIBDEXFILE_EXTERNAL_INCLUDE_ART_API_DEX_FILE_SUPPORT_H_
+#define ART_LIBDEXFILE_EXTERNAL_INCLUDE_ART_API_DEX_FILE_SUPPORT_H_
 
 // Dex file external API
 
@@ -253,4 +253,4 @@
 }  // namespace dex
 }  // namespace art_api
 
-#endif  // ART_LIBDEXFILE_EXTERNAL_INCLUDE_ART_API_EXT_DEX_FILE_H_
+#endif  // ART_LIBDEXFILE_EXTERNAL_INCLUDE_ART_API_DEX_FILE_SUPPORT_H_