Remove redundant enum defined in both mojom and .h: MediaStreamType

This CL is the 2 out of N CL that remove redundant enums from Blink's
public API, on the mediastream directories. At this time MediaStreamType [1]
is replaced by it mojom existing variant in [2].

[1] third_party/blink/public/common/mediastream/media_stream_request.h
[2] third_party/blink/public/mojom/mediastream/media_stream.mojom

The associated typemap [3] and traits declarations [4][5] are also removed.

[3] third_party/blink/public/common/mediastream/media_stream.typemap
[4] third_party/blink/common/mediastream/media_stream_mojom_traits.cc
[5] third_party/blink/public/common/mediastream/media_stream_mojom_traits.h

[email protected]

BUG=923394,919392

Change-Id: Ie9fce964db55731892662627c1018a00b083740e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1642807
Reviewed-by: Antonio Gomes <[email protected]>
Reviewed-by: Daniel Cheng <[email protected]>
Reviewed-by: Guido Urdaneta <[email protected]>
Reviewed-by: Kentaro Hara <[email protected]>
Commit-Queue: Antonio Gomes <[email protected]>
Cr-Commit-Position: refs/heads/master@{#666374}
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index eec35654..09adaae 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -3105,15 +3105,15 @@
 bool WebContentsImpl::CheckMediaAccessPermission(
     RenderFrameHost* render_frame_host,
     const url::Origin& security_origin,
-    blink::MediaStreamType type) {
-  DCHECK(type == blink::MEDIA_DEVICE_AUDIO_CAPTURE ||
-         type == blink::MEDIA_DEVICE_VIDEO_CAPTURE);
+    blink::mojom::MediaStreamType type) {
+  DCHECK(type == blink::mojom::MediaStreamType::DEVICE_AUDIO_CAPTURE ||
+         type == blink::mojom::MediaStreamType::DEVICE_VIDEO_CAPTURE);
   return delegate_ && delegate_->CheckMediaAccessPermission(
                           render_frame_host, security_origin.GetURL(), type);
 }
 
 std::string WebContentsImpl::GetDefaultMediaDeviceID(
-    blink::MediaStreamType type) {
+    blink::mojom::MediaStreamType type) {
   if (!delegate_)
     return std::string();
   return delegate_->GetDefaultMediaDeviceID(this, type);