Broaden the suppression for the threads TileTaskGraphRunner leaks.

Both ImageDecodeTaskImpl and RasterTaskImpl are affected, and each races with
lots of objects that are destroyed during render-process shutdown.

BUG=430533
TBR=reveman@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/789103009

Cr-Original-Commit-Position: refs/heads/master@{#311106}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: cec2f2fe0176dd25c3f1420f43fe15a3deac7622

sanitizers/tsan_suppressions.cc

@@ -313,7 +313,7 @@ char kTSanDefaultSuppressions[] =
 "race:net::SSLConfig::SSLConfig\n"
 
 // https://crbug.com/430533
-"race:content::ChildGpuMemoryBufferManager::~ChildGpuMemoryBufferManager\n"
+"race:TileTaskGraphRunner::Run\n"
 
 // End of suppressions.
 ;  // Please keep this semicolon.