Mac/Linux: Ensure window size constraints propagate to the window server during Init

ui/views/test/widget_test_mac.mm

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/test/widget_test.h"
 
 #include <Cocoa/Cocoa.h>
 
 #import "base/mac/scoped_nsobject.h"
 #import "base/mac/scoped_objc_class_swizzler.h"
@@ skipping 55 matching lines @@
     if (window == second)
       return !first;
 
     if (window == first)
       first = nil;
   }
   return false;
 }
 
 // static
+gfx::Size WidgetTest::GetNativeWidgetMinimumContentSize(Widget* widget) {
+  return gfx::Size([widget->GetNativeWindow() contentMinSize]);
+}
+
+// static
 ui::EventProcessor* WidgetTest::GetEventProcessor(Widget* widget) {
   return static_cast<internal::RootView*>(widget->GetRootView());
 }
 
 // static
 scoped_ptr<WidgetTest::FakeActivation> WidgetTest::FakeWidgetIsActiveAlways() {
   return make_scoped_ptr(new FakeActivationMac);
 }
 
 }  // namespace test
 }  // namespace views