UBSan: Add blacklist files for libyuvC standalone.

For more info, see
http://dev.chromium.org/developers/testing/undefinedbehaviorsanitizer

TESTED=Passing compilation using:
GYP_DEFINES="ubsan=1"
GYP_DEFINES="ubsan_vptr=1"

R=harryjin@google.com, pbos@webrtc.org
BUG=libyuv:563,webrtc:5124

Review URL: https://codereview.chromium.org/1659713002 .

tools/ubsan/OWNERS

+pbos@webrtc.org
+kjellander@webrtc.org
+fbarchard@chromium.org
+

tools/ubsan/blacklist.txt

+#############################################################################
+# UBSan blacklist.
+# Please think twice before you add or remove these rules.
+
+# This is a stripped down copy of Chromium's blacklist.txt, to enable
+# adding WebRTC-specific blacklist entries.
+
+#############################################################################
+# YASM does some funny things that UBsan doesn't like.
+# https://crbug.com/489901
+src:*/third_party/yasm/*
+
+#############################################################################
+# Ignore system libraries.
+src:*/usr/*

tools/ubsan/vptr_blacklist.txt

+#############################################################################
+# UBSan vptr blacklist.
+# Function and type based blacklisting use a mangled name, and it is especially
+# tricky to represent C++ types. For now, any possible changes by name manglings
+# are simply represented as wildcard expressions of regexp, and thus it might be
+# over-blacklisted.
+#
+# Please think twice before you add or remove these rules.
+#
+# This is a stripped down copy of Chromium's vptr_blacklist.txt, to enable
+# adding libyuv-specific blacklist entries.
+
+#############################################################################
+# Using raw pointer values.
+#
+# A raw pointer value (16) is used to infer the field offset by
+# GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET.
+
+# Example:
+# src:*/third_party/protobuf/src/google/protobuf/compiler/plugin.pb.cc
+