Update from https://crrev.com/312398

gpu/command_buffer/service/mailbox_manager_sync.cc

Index: gpu/command_buffer/service/mailbox_manager_sync.cc
diff --git a/gpu/command_buffer/service/mailbox_manager_sync.cc b/gpu/command_buffer/service/mailbox_manager_sync.cc
index 65376afdf87e9843485787e21fdd16acbc970b67..b12e9b4781499b4784015ec4dbdb5958d996253e 100644
--- a/gpu/command_buffer/service/mailbox_manager_sync.cc
+++ b/gpu/command_buffer/service/mailbox_manager_sync.cc
@@ -31,11 +31,6 @@ bool SkipTextureWorkarounds(const Texture* texture) {
   if (texture->target() != GL_TEXTURE_2D || needs_mips || !texture->IsDefined())
     return true;
 
-  // Skip compositor resources/tile textures.
-  // TODO: Remove this, see crbug.com/399226.
-  if (texture->pool() == GL_TEXTURE_POOL_MANAGED_CHROMIUM)
-    return true;
-
   return false;
 }