Fix repainting not happening when switching tabs after resizing the browser. I didn't copy this beh…

content/browser/tab_contents/tab_contents_view_win.cc

Index: content/browser/tab_contents/tab_contents_view_win.cc
===================================================================
--- content/browser/tab_contents/tab_contents_view_win.cc	(revision 126170)
+++ content/browser/tab_contents/tab_contents_view_win.cc	(working copy)
@@ -339,6 +339,20 @@
 LRESULT TabContentsViewWin::OnWindowPosChanged(
     UINT message, WPARAM wparam, LPARAM lparam, BOOL& handled) {
   WINDOWPOS* window_pos = reinterpret_cast<WINDOWPOS*>(lparam);
+  if (window_pos->flags & SWP_HIDEWINDOW) {
+    tab_contents_->HideContents();
+    return 0;
+  }
+
+  // The TabContents was shown by a means other than the user selecting a
+  // Tab, e.g. the window was minimized then restored.
+  if (window_pos->flags & SWP_SHOWWINDOW)
+    tab_contents_->ShowContents();
+
+  // Unless we were specifically told not to size, cause the renderer to be
+  // sized to the new bounds, which forces a repaint. Not required for the
+  // simple minimize-restore case described above, for example, since the
+  // size hasn't changed.
   if (window_pos->flags & SWP_NOSIZE)
     return 0;