Reserve space in the resource ID set.

cc/surfaces/surface_aggregator.cc

Index: cc/surfaces/surface_aggregator.cc
diff --git a/cc/surfaces/surface_aggregator.cc b/cc/surfaces/surface_aggregator.cc
index b4123d01d48c3c376d6f7a19dd2ccd741c4dcab7..4ea7f564943385150393f9c0d6b206f3cd3806c0 100644
--- a/cc/surfaces/surface_aggregator.cc
+++ b/cc/surfaces/surface_aggregator.cc
@@ -170,6 +170,16 @@ bool SurfaceAggregator::ValidateResources(
   provider_->ReceiveFromChild(child_id, frame_data->resource_list);
 
   ResourceProvider::ResourceIdSet referenced_resources;
+  // Resizing to 0 breaks stlport hash_set.

[danakj, 2015/04/28 17:25:46]

TODO here pls

+  size_t reserve_size =
+      std::max(static_cast<size_t>(1), frame_data->resource_list.size());
+#if defined(COMPILER_MSVC)
+  referenced_resources.reserve(reserve_size);
+#elif defined(COMPILER_GCC)
+  // Pre-standard hash-tables only implement resize, which behaves similarly
+  // to reserve for these keys. TODO: Fix when C++11 is supported everywhere.

[danakj, 2015/04/28 17:25:46]

TODO needs a name and I think should start the line.

+  referenced_resources.resize(reserve_size);
+#endif
 
   bool invalid_frame = false;
   DrawQuad::ResourceIteratorCallback remap =