- Electron version: 1.1.2 arch=ia32
- Operating system: Windows 7x64

Electron is using the largest icon available in the .ico file for the windows bar.  I set the icon in my main window with `createWindow('main', { ...icon: icon_path })`

You can reproduce this with an icon that displays the size: (click 'test icon with several images' to download)
https://bugzilla.gnome.org/show_bug.cgi?id=551026

here is a screenshot of the wrong icon being used (should be 32x icon):

![wrong-icon](https://cloud.githubusercontent.com/assets/1128302/15620020/cce93d12-2425-11e6-8af4-ce6330aed1c9.png)

atom/browser/api/atom_api_window.cc
NativeWindow* native_window) {
  auto existing = TrackableObject::FromWrappedClass(isolate, native_window);
  if (existing)
    return existing->GetWrapper();
  else
    return v8::Null(isolate);
}
}  
}  
namespace {
using atom::api::Window;
void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
                v8::Local<v8::Context> context, void* priv) {
  v8::Isolate* isolate = context->GetIsolate();
  v8::Local<v8::Function> constructor = mate::CreateConstructor<Window>(
      isolate, "BrowserWindow", base::Bind(&Window::New));
  mate::Dictionary browser_window(isolate, constructor);
  browser_window.SetMethod("fromId",
                           &mate::TrackableObject<Window>::FromWeakMapID);
  browser_window.SetMethod("getAllWindows",
                           &mate::TrackableObject<Window>::GetAll);
  mate::Dictionary dict(isolate, exports);
  dict.Set("BrowserWindow", browser_window);
}
}  
NODE_MODULE_CONTEXT_AWARE_BUILTIN(atom_browser_window, Initialize)