Move fake-handle frame creation into test target.

webrtc/test/fake_texture_frame.cc

+/*
+ *  Copyright (c) 2016 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 "webrtc/test/fake_texture_frame.h"
+
+namespace webrtc {
+namespace test {
+
+VideoFrame FakeNativeHandle::CreateFrame(FakeNativeHandle* native_handle,
+                                         int width,
+                                         int height,
+                                         uint32_t timestamp,
+                                         int64_t render_time_ms,
+                                         VideoRotation rotation) {
+  return VideoFrame(new rtc::RefCountedObject<FakeNativeHandleBuffer>(
+                        native_handle, width, height),
+                    timestamp, render_time_ms, rotation);
+}
+}  // namespace test
+}  // namespace webrtc