(3) Rename files to snake_case: move the files

Mechanically generated with this command:

tools_webrtc/do-rename.sh move all-renames.txt

Bug: webrtc:10159
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: I8b05b6eab9b9d18b29c2199bbea239e9add1e690
Reviewed-on: https://webrtc-review.googlesource.com/c/115481
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26225}

sdk/android/src/jni/video_decoder_fallback.cc

@@ -0,0 +1,39 @@
+/*
+ *  Copyright 2017 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <jni.h>
+
+#include "api/video_codecs/video_decoder_software_fallback_wrapper.h"
+#include "sdk/android/generated_video_jni/jni/VideoDecoderFallback_jni.h"
+#include "sdk/android/src/jni/jni_helpers.h"
+#include "sdk/android/src/jni/videodecoderwrapper.h"
+
+namespace webrtc {
+namespace jni {
+
+static jlong JNI_VideoDecoderFallback_CreateDecoder(
+    JNIEnv* jni,
+    const JavaParamRef<jobject>& j_fallback_decoder,
+    const JavaParamRef<jobject>& j_primary_decoder) {
+  std::unique_ptr<VideoDecoder> fallback_decoder =
+      JavaToNativeVideoDecoder(jni, j_fallback_decoder);
+  std::unique_ptr<VideoDecoder> primary_decoder =
+      JavaToNativeVideoDecoder(jni, j_primary_decoder);
+
+  VideoDecoder* nativeWrapper =
+      CreateVideoDecoderSoftwareFallbackWrapper(std::move(fallback_decoder),
+                                                std::move(primary_decoder))
+          .release();
+
+  return jlongFromPointer(nativeWrapper);
+}
+
+}  // namespace jni
+}  // namespace webrtc