Select theme resources from ResourceBundle at requested scale factor.

ui/base/resource/data_pack.cc

Index: ui/base/resource/data_pack.cc
diff --git a/ui/base/resource/data_pack.cc b/ui/base/resource/data_pack.cc
index 0fa97a83bd03104425edc2ae2d96b2647cabc2f7..81f87e9e6a1a2dfa05f17817d90564c0af00adca 100644
--- a/ui/base/resource/data_pack.cc
+++ b/ui/base/resource/data_pack.cc
@@ -145,6 +145,11 @@ bool DataPack::Load(const FilePath& path) {
   return true;
 }
 
+bool DataPack::HasResource(uint16 resource_id) const {
+  return !!bsearch(&resource_id, mmap_->data() + kHeaderLength, resource_count_,

[tony, 2012/05/11 21:22:03]

Nit: The !! isn't necessary unless you think it improves readability.

[flackr, 2012/05/11 21:59:07]

The win_rel try bot complained about casting void* to bool:
e:\b\build\slave\win\build\src\ui\base\resource\data_pack.cc(150) :error C2220:
warning treated as error - no 'object' file generated
e:\b\build\slave\win\build\src\ui\base\resource\data_pack.cc(150) : warning
C4800: 'void *' : forcing value to bool 'true' or 'false' (performance warning)

+                   sizeof(DataPackEntry), DataPackEntry::CompareById);
+}
+
 bool DataPack::GetStringPiece(uint16 resource_id,
                               base::StringPiece* data) const {
   // It won't be hard to make this endian-agnostic, but it's not worth