Make CanPlayType return "probably" for HI10P h264 videos.

media/base/mime_util_internal.h

Index: media/base/mime_util_internal.h
diff --git a/media/base/mime_util_internal.h b/media/base/mime_util_internal.h
index 5e06b54fc8b3fbd944e2e99113a5647d2471ad11..e6ff99bd87ccbe4d1bfc3498b39a7cf0d6f9e05a 100644
--- a/media/base/mime_util_internal.h
+++ b/media/base/mime_util_internal.h
@@ -109,9 +109,11 @@ class MEDIA_EXPORT MimeUtil {
   // |is_ambiguous| is true if |codec_id| did not have enough information to
   // unambiguously determine the proper Codec enum value. If |is_ambiguous|
   // is true |codec| contains the best guess for the intended Codec enum value.
+  // |is_encrypted| means the codec will be used with encrypted blocks.
   bool StringToCodec(const std::string& codec_id,
                      Codec* codec,
-                     bool* is_ambiguous) const;
+                     bool* is_ambiguous,
+                     bool is_encrypted) const;
 
   // Returns true if |codec| is supported when contained in
   // |mime_type_lower_case|. Note: This method will always return false for