Rename InitCpuFlags suppression.

Stack symbolization on parallel tsan bot doesn't include libyuv namespace.

BUG=libyuv:508, chromium:445880
R=kjellander@webrtc.org

Review URL: https://codereview.webrtc.org/1427233003 .

Cr-Commit-Position: refs/heads/master@{#10477}
diff --git a/webrtc/build/sanitizers/tsan_suppressions_webrtc.cc b/webrtc/build/sanitizers/tsan_suppressions_webrtc.cc
index 4022160..b05bbb6 100644
--- a/webrtc/build/sanitizers/tsan_suppressions_webrtc.cc
+++ b/webrtc/build/sanitizers/tsan_suppressions_webrtc.cc
@@ -85,7 +85,7 @@
 
 // Race between InitCpuFlags and TestCpuFlag in libyuv.
 // https://code.google.com/p/libyuv/issues/detail?id=508
-"race:libyuv::TestCpuFlag\n"
+"race:InitCpuFlags\n"
 
 // End of suppressions.
 ;  // Please keep this semicolon.