Reserve space in the resource ID set.

cc/layers/delegated_renderer_layer_impl.cc

Index: cc/layers/delegated_renderer_layer_impl.cc
diff --git a/cc/layers/delegated_renderer_layer_impl.cc b/cc/layers/delegated_renderer_layer_impl.cc
index aa16beb56883d3152baab75fee85c03ecf486284..a98041f68bd8d89a416a7fbeabcef2c0797b5662 100644
--- a/cc/layers/delegated_renderer_layer_impl.cc
+++ b/cc/layers/delegated_renderer_layer_impl.cc
@@ -122,6 +122,16 @@ void DelegatedRendererLayerImpl::SetFrameData(
 
   bool invalid_frame = false;
   ResourceProvider::ResourceIdSet resources_in_frame;
+  // Resizing to 0 breaks stlport hash_set.
+  size_t reserve_size =
+      std::max(static_cast<size_t>(1), frame_data->resource_list.size());

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

actually instead of max(1,..) can you just if(reserve_size) down at the resize()
call?

+#if defined(COMPILER_MSVC)
+  resources_in_frame.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

+  resources_in_frame.resize(reserve_size);
+#endif
   DrawQuad::ResourceIteratorCallback remap_resources_to_parent_callback =
       base::Bind(&ResourceRemapHelper,
                  &invalid_frame,