Converts most of WorkspaceLayoutManager tests to use common code

ash/aura/wm_window_aura.h

Index: ash/aura/wm_window_aura.h
diff --git a/ash/aura/wm_window_aura.h b/ash/aura/wm_window_aura.h
index 9ea365f1cb21a004ffb452a7d6ff548d8a154aa3..503a60e2fa02eb6aa88cc8701b7eb58c7ad9e8e8 100644
--- a/ash/aura/wm_window_aura.h
+++ b/ash/aura/wm_window_aura.h
@@ -62,6 +62,8 @@ class ASH_EXPORT WmWindowAura : public WmWindow,
   void SetAppType(int app_type) const override;
   bool IsBubble() override;
   ui::Layer* GetLayer() override;
+  bool GetLayerTargetVisibility() override;
+  bool GetLayerVisible() override;
   display::Display GetDisplayNearestWindow() override;
   bool HasNonClientArea() override;
   int GetNonClientComponent(const gfx::Point& location) override;
@@ -143,6 +145,7 @@ class ASH_EXPORT WmWindowAura : public WmWindow,
   void StackChildAtBottom(WmWindow* child) override;
   void StackChildAbove(WmWindow* child, WmWindow* target) override;
   void StackChildBelow(WmWindow* child, WmWindow* target) override;
+  void SetPinned(bool trusted) override;
   void SetAlwaysOnTop(bool value) override;
   bool IsAlwaysOnTop() const override;
   void Hide() override;