Remove most of the media stack.

sky/engine/testing/platform/webmimeregistry_impl.cc

Index: sky/engine/testing/platform/webmimeregistry_impl.cc
diff --git a/sky/engine/testing/platform/webmimeregistry_impl.cc b/sky/engine/testing/platform/webmimeregistry_impl.cc
index e9cc5d8dfe8bc865f489d92599902c4df7d2a91e..c4a8bc09e934b65727f78eb075931e4cd59df521 100644
--- a/sky/engine/testing/platform/webmimeregistry_impl.cc
+++ b/sky/engine/testing/platform/webmimeregistry_impl.cc
@@ -62,21 +62,6 @@ blink::WebMimeRegistry::SupportsType WebMimeRegistryImpl::supportsMediaMIMEType(
   return IsNotSupported;
 }
 
-bool WebMimeRegistryImpl::supportsMediaSourceMIMEType(
-    const blink::WebString& mime_type,
-    const blink::WebString& codecs) {
-  NOTIMPLEMENTED();
-  return false;
-}
-
-bool WebMimeRegistryImpl::supportsEncryptedMediaMIMEType(
-    const blink::WebString& key_system,
-    const blink::WebString& mime_type,
-    const blink::WebString& codecs) {
-  NOTIMPLEMENTED();
-  return false;
-}
-
 blink::WebMimeRegistry::SupportsType
     WebMimeRegistryImpl::supportsNonImageMIMEType(
     const blink::WebString& mime_type) {