Revert "Define cricket::MediaType in terms of webrtc::MediaType"

This reverts commit 3ce6391b38.

Reason for revert: Breaks downstream test

Original change's description:
> Define cricket::MediaType in terms of webrtc::MediaType
>
> This is one step in getting rid of cricket::MediaType.
>
> Bug: webrtc:12754
> Fixes: webrtc:12764
> Change-Id: Idee832572bdc4c0e3bfdec6fb31ec0ba9db3e995
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/218346
> Commit-Queue: Harald Alvestrand <hta@webrtc.org>
> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#33994}

TBR=mbonadei@webrtc.org,hta@webrtc.org,webrtc-scoped@luci-project-accounts.iam.gserviceaccount.com

Change-Id: I64772018dea55e4f0946464364a60a39cec7e9ec
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: webrtc:12754
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/218603
Reviewed-by: Björn Terelius <terelius@webrtc.org>
Commit-Queue: Björn Terelius <terelius@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#34000}

api/media_types.h

@@ -15,23 +15,16 @@
 
 #include "rtc_base/system/rtc_export.h"
 
-namespace webrtc {
-
-enum class MediaType { ANY, AUDIO, VIDEO, DATA, UNSUPPORTED };
-
-}  // namespace webrtc
-
 // The cricket and webrtc have separate definitions for what a media type is.
-// They used to be incompatible, but now cricket is defined in terms of the
-// webrtc definition.
+// They're not compatible. Watch out for this.
 
 namespace cricket {
 
 enum MediaType {
-  MEDIA_TYPE_AUDIO = static_cast<int>(webrtc::MediaType::AUDIO),
-  MEDIA_TYPE_VIDEO = static_cast<int>(webrtc::MediaType::VIDEO),
-  MEDIA_TYPE_DATA = static_cast<int>(webrtc::MediaType::DATA),
-  MEDIA_TYPE_UNSUPPORTED = static_cast<int>(webrtc::MediaType::UNSUPPORTED),
+  MEDIA_TYPE_AUDIO,
+  MEDIA_TYPE_VIDEO,
+  MEDIA_TYPE_DATA,
+  MEDIA_TYPE_UNSUPPORTED
 };
 
 extern const char kMediaTypeAudio[];
@@ -42,4 +35,10 @@ RTC_EXPORT std::string MediaTypeToString(MediaType type);
 
 }  // namespace cricket
 
+namespace webrtc {
+
+enum class MediaType { ANY, AUDIO, VIDEO, DATA };
+
+}  // namespace webrtc
+
 #endif  // API_MEDIA_TYPES_H_

media/engine/fake_webrtc_call.cc

@@ -452,7 +452,6 @@ webrtc::NetworkState FakeCall::GetNetworkState(webrtc::MediaType media) const {
       return video_network_state_;
     case webrtc::MediaType::DATA:
     case webrtc::MediaType::ANY:
-    case webrtc::MediaType::UNSUPPORTED:
       ADD_FAILURE() << "GetNetworkState called with unknown parameter.";
       return webrtc::kNetworkDown;
   }
@@ -639,7 +638,6 @@ void FakeCall::SignalChannelNetworkState(webrtc::MediaType media,
       break;
     case webrtc::MediaType::DATA:
     case webrtc::MediaType::ANY:
-    case webrtc::MediaType::UNSUPPORTED:
       ADD_FAILURE()
           << "SignalChannelNetworkState called with unknown parameter.";
   }

pc/peer_connection_header_extension_unittest.cc

@@ -199,9 +199,9 @@ TEST_P(PeerConnectionHeaderExtensionTest, NegotiatedExtensionsAreAccessible) {
 INSTANTIATE_TEST_SUITE_P(
     ,
     PeerConnectionHeaderExtensionTest,
-    Combine(Values(cricket::MediaType::MEDIA_TYPE_AUDIO,
-                   cricket::MediaType::MEDIA_TYPE_VIDEO),
-            Values(SdpSemantics::kPlanB, SdpSemantics::kUnifiedPlan)),
+    Combine(Values(SdpSemantics::kPlanB, SdpSemantics::kUnifiedPlan),
+            Values(cricket::MediaType::MEDIA_TYPE_AUDIO,
+                   cricket::MediaType::MEDIA_TYPE_VIDEO)),
     [](const testing::TestParamInfo<
         PeerConnectionHeaderExtensionTest::ParamType>& info) {
       cricket::MediaType media_type;

sdk/android/api/org/webrtc/MediaStreamTrack.java

@@ -30,8 +30,8 @@ public class MediaStreamTrack {
 
   // Must be kept in sync with cricket::MediaType.
   public enum MediaType {
-    MEDIA_TYPE_AUDIO(1),
-    MEDIA_TYPE_VIDEO(2);
+    MEDIA_TYPE_AUDIO(0),
+    MEDIA_TYPE_VIDEO(1);
 
     private final int nativeIndex;