Make NativeControl inherit from base::WindowImpl instead of CWindowImpl to reduce a dependency on ATL.

BUG=5027
TEST=none
Review URL: http://codereview.chromium.org/169015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@23645 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 8 insertions, 1 deletions

diff --git a/base/window_impl.cc b/base/window_impl.cc
index c3b3ad4..7438bd9 100644
--- a/base/window_impl.cc
+++ b/base/window_impl.cc
@@ -155,7 +155,14 @@ LRESULT WindowImpl::OnWndProc(UINT message, WPARAM w_param, LPARAM l_param) {
   // Handle the message if it's in our message map; otherwise, let the system
   // handle it.
   if (!ProcessWindowMessage(hwnd_, message, w_param, l_param, result))
-    result = DefWindowProc(hwnd_, message, w_param, l_param);
+      result = DefWindowProc(hwnd_, message, w_param, l_param);
+
+  if (message == WM_NCDESTROY) {
+    // Notify the subclass that this is the last message before the window
+    // is destroyed.
+    OnFinalMessage(hwnd_);
+    hwnd_ = NULL;
+  }
 
   return result;
 }