Make HWNDMessageHandler subclass WindowImpl.

ui/views/widget/native_widget_win_unittest.cc

Index: ui/views/widget/native_widget_win_unittest.cc
===================================================================
--- ui/views/widget/native_widget_win_unittest.cc	(revision 153679)
+++ ui/views/widget/native_widget_win_unittest.cc	(working copy)
@@ -50,28 +50,28 @@
 
 TEST_F(NativeWidgetWinTest, ZoomWindow) {
   scoped_ptr<NativeWidgetWin> window(CreateNativeWidgetWin());
-  window->ShowWindow(SW_HIDE);
+  ShowWindow(window->GetNativeView(), SW_HIDE);
   EXPECT_FALSE(window->IsActive());
-  window->ShowWindow(SW_MAXIMIZE);
-  EXPECT_TRUE(window->IsZoomed());
+  ShowWindow(window->GetNativeView(), SW_MAXIMIZE);
+  EXPECT_TRUE(IsZoomed(window->GetNativeView()));
   window->CloseNow();
 }
 
 TEST_F(NativeWidgetWinTest, SetBoundsForZoomedWindow) {
   scoped_ptr<NativeWidgetWin> window(CreateNativeWidgetWin());
-  window->ShowWindow(SW_MAXIMIZE);
-  EXPECT_TRUE(window->IsZoomed());
+  ShowWindow(window->GetNativeView(), SW_MAXIMIZE);
+  EXPECT_TRUE(IsZoomed(window->GetNativeView()));
 
   // Create another window, so that it will be active.
   scoped_ptr<NativeWidgetWin> window2(CreateNativeWidgetWin());
-  window2->ShowWindow(SW_MAXIMIZE);
+  ShowWindow(window2->GetNativeView(), SW_MAXIMIZE);
   EXPECT_TRUE(window2->IsActive());
   EXPECT_FALSE(window->IsActive());
 
   // Verify that setting the bounds of a zoomed window will unzoom it and not
   // cause it to be activated.
   window->SetBounds(gfx::Rect(50, 50, 650, 650));
-  EXPECT_FALSE(window->IsZoomed());
+  EXPECT_FALSE(IsZoomed(window->GetNativeView()));
   EXPECT_FALSE(window->IsActive());
 
   // Cleanup.