cc: Prevent resources from being allocated for solid tiles

cc/resources/tile_manager.cc

Index: cc/resources/tile_manager.cc
diff --git a/cc/resources/tile_manager.cc b/cc/resources/tile_manager.cc
index da888cd77297c66a19ba39bc84425ce3abe040f4..5cb149de9ce4a807d533a8cf25399aff6504c807 100644
--- a/cc/resources/tile_manager.cc
+++ b/cc/resources/tile_manager.cc
@@ -830,8 +830,10 @@ void TileManager::UpdateTileDrawInfo(
 
   if (analysis.is_solid_color) {
     draw_info.set_solid_color(analysis.solid_color);
-    resource_pool_->ReleaseResource(resource.Pass());
+    if (resource)
+      resource_pool_->ReleaseResource(resource.Pass());
   } else {
+    DCHECK(resource);
     draw_info.set_use_resource();
     draw_info.resource_ = resource.Pass();
   }