Shuffle media-related WebMimeRegistry code from webkit/ to content/.

net/base/mime_util.h

Index: net/base/mime_util.h
diff --git a/net/base/mime_util.h b/net/base/mime_util.h
index fc0999b4feb8ebd34c194070a9a985c32edcdeb3..b05220a4662be8183146499a59415b66e93efc90 100644
--- a/net/base/mime_util.h
+++ b/net/base/mime_util.h
@@ -94,15 +94,6 @@ NET_EXPORT void GetExtensionsForMimeType(
     const std::string& mime_type,
     std::vector<base::FilePath::StringType>* extensions);
 
-// Test only methods that return lists of proprietary media types and codecs
-// that are not supported by all variations of Chromium.
-// These types and codecs must be blacklisted to ensure consistent layout test
-// results across all Chromium variations.
-NET_EXPORT void GetMediaTypesBlacklistedForTests(
-    std::vector<std::string>* types);
-NET_EXPORT void GetMediaCodecsBlacklistedForTests(
-    std::vector<std::string>* codecs);
-
 // Returns the IANA media type contained in |mime_type|, or an empty
 // string if |mime_type| does not specifify a known media type.
 // Supported media types are defined at: