In modules/ replace mock macros with unified MOCK_METHOD macro

Bug: webrtc:11564
Change-Id: I8a87389a795029feb818449ab1e5bbe69486db28
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/175908
Reviewed-by: Philip Eliasson <philipel@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31364}

modules/congestion_controller/receive_side_congestion_controller_unittest.cc

@@ -37,8 +37,10 @@ uint32_t AbsSendTime(int64_t t, int64_t denom) {
 
 class MockPacketRouter : public PacketRouter {
  public:
-  MOCK_METHOD2(OnReceiveBitrateChanged,
-               void(const std::vector<uint32_t>& ssrcs, uint32_t bitrate));
+  MOCK_METHOD(void,
+              OnReceiveBitrateChanged,
+              (const std::vector<uint32_t>& ssrcs, uint32_t bitrate),
+              (override));
 };
 
 const uint32_t kInitialBitrateBps = 60000;