Wires up WorkspaceLayoutManager in mash

mash/wm/frame/non_client_frame_view_mash.cc

Index: mash/wm/frame/non_client_frame_view_mash.cc
diff --git a/mash/wm/frame/non_client_frame_view_mash.cc b/mash/wm/frame/non_client_frame_view_mash.cc
index 320d7689f3a3b570b1ec950782885133196c95ea..d0fd849e82cc495820e2edbacd4a3f6c992ab745 100644
--- a/mash/wm/frame/non_client_frame_view_mash.cc
+++ b/mash/wm/frame/non_client_frame_view_mash.cc
@@ -260,6 +260,12 @@ const char* NonClientFrameViewMash::GetClassName() const {
 }
 
 gfx::Size NonClientFrameViewMash::GetMinimumSize() const {
+  // If the client area is empty we assume the client is rendering everything
+  // and the window can be resized to anything.
+  // TODO(sky): we need a minimum-size property.
+  if (window_->client_area().IsEmpty())
+    return gfx::Size();
+
   gfx::Size min_client_view_size(frame_->client_view()->GetMinimumSize());
   return gfx::Size(
       std::max(header_view_->GetMinimumWidth(), min_client_view_size.width()),