Bug 506151 - MozillaDropShadowWindowClass constant isn't in the defs file. r=vlad.

widget/src/windows/nsWindow.cpp

@@ -770,8 +770,6 @@ LPCWSTR nsWindow::WindowClass()
 // Return the proper popup window class
 LPCWSTR nsWindow::WindowPopupClass()
 {
-  const LPCWSTR className = L"MozillaDropShadowWindowClass";
-
   if (!nsWindow::sIsPopupClassRegistered) {
     WNDCLASSW wc;
 
@@ -784,7 +782,7 @@ LPCWSTR nsWindow::WindowPopupClass()
     wc.hCursor       = NULL;
     wc.hbrBackground = mBrush;
     wc.lpszMenuName  = NULL;
-    wc.lpszClassName = className;
+    wc.lpszClassName = kClassNameDropShadow;
 
     nsWindow::sIsPopupClassRegistered = ::RegisterClassW(&wc);
     if (!nsWindow::sIsPopupClassRegistered) {

widget/src/windows/nsWindowDefs.h

@@ -190,6 +190,7 @@ const LPCWSTR kClassNameContent      = L"MozillaContentWindowClass";
 const LPCWSTR kClassNameContentFrame = L"MozillaContentFrameWindowClass";
 const LPCWSTR kClassNameGeneral      = L"MozillaWindowClass";
 const LPCWSTR kClassNameDialog       = L"MozillaDialogClass";
+const LPCWSTR kClassNameDropShadow   = L"MozillaDropShadowWindowClass";
 
 static const PRUint32 sModifierKeyMap[][3] = {
   { nsIWidget::CAPS_LOCK, VK_CAPITAL, 0 },