Delete header file mock_vcm_callbacks.h

Move definitions of mock classes to the only user, the unit tests for
the deprecated class vcm::VideoReceiver.

Bug: webrtc:7408
Change-Id: I05e38ed8ebbe615bb2db0b631ec914773fb0a520
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/168182
Reviewed-by: Philip Eliasson <philipel@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30451}
diff --git a/modules/video_coding/video_receiver_unittest.cc b/modules/video_coding/video_receiver_unittest.cc
index 7526691..363838b8 100644
--- a/modules/video_coding/video_receiver_unittest.cc
+++ b/modules/video_coding/video_receiver_unittest.cc
@@ -9,7 +9,6 @@
  */
 
 #include "api/test/mock_video_decoder.h"
-#include "modules/video_coding/include/mock/mock_vcm_callbacks.h"
 #include "modules/video_coding/include/video_coding.h"
 #include "modules/video_coding/timing.h"
 #include "modules/video_coding/video_coding_impl.h"
@@ -25,6 +24,24 @@
 namespace vcm {
 namespace {
 
+class MockPacketRequestCallback : public VCMPacketRequestCallback {
+ public:
+  MOCK_METHOD2(ResendPackets,
+               int32_t(const uint16_t* sequenceNumbers, uint16_t length));
+};
+
+class MockVCMReceiveCallback : public VCMReceiveCallback {
+ public:
+  MockVCMReceiveCallback() {}
+  virtual ~MockVCMReceiveCallback() {}
+
+  MOCK_METHOD4(
+      FrameToRender,
+      int32_t(VideoFrame&, absl::optional<uint8_t>, int32_t, VideoContentType));
+  MOCK_METHOD1(OnIncomingPayloadType, void(int));
+  MOCK_METHOD1(OnDecoderImplementationName, void(const char*));
+};
+
 class TestVideoReceiver : public ::testing::Test {
  protected:
   static const int kUnusedPayloadType = 10;