Revert of Replace interface VideoCapturerInput with VideoSinkInterface.

webrtc/test/video_capturer.cc

+/*
+ *  Copyright (c) 2013 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/video_capturer.h"
+
+#include "webrtc/test/testsupport/fileutils.h"
+#include "webrtc/test/frame_generator_capturer.h"
+#include "webrtc/test/vcm_capturer.h"
+
+namespace webrtc {
+namespace test {
+
+class NullCapturer : public VideoCapturer {
+ public:
+  NullCapturer() : VideoCapturer(NULL) {}
+  virtual ~NullCapturer() {}
+
+  virtual void Start() {}
+  virtual void Stop() {}
+};
+
+VideoCapturer::VideoCapturer(VideoCaptureInput* input) : input_(input) {
+}
+
+VideoCapturer* VideoCapturer::Create(VideoCaptureInput* input,
+                                     size_t width,
+                                     size_t height,
+                                     int fps,
+                                     Clock* clock) {
+  VcmCapturer* vcm_capturer = VcmCapturer::Create(input, width, height, fps);
+
+  if (vcm_capturer != NULL) {
+    return vcm_capturer;
+  }
+  // TODO(pbos): Log a warning that this failed.
+
+  FrameGeneratorCapturer* frame_generator_capturer =
+      FrameGeneratorCapturer::Create(input, width, height, fps, clock);
+  if (frame_generator_capturer != NULL) {
+    return frame_generator_capturer;
+  }
+  // TODO(pbos): Log a warning that this failed.
+
+  return new NullCapturer();
+}
+}  // test
+}  // webrtc