Do all OOLing in the views code. linux_views now builds clean with the clang plugin.

views/window/window.h

Index: views/window/window.h
diff --git a/views/window/window.h b/views/window/window.h
index e083f68ff5dbb2e506a1239bcbbd294efa5889e8..bc12d3d8dc69dfd84c2478caa356fd5bd98637ae 100644
--- a/views/window/window.h
+++ b/views/window/window.h
@@ -138,7 +138,7 @@ class Window {
   // Returns true if the Window is considered to be an "app window" - i.e.
   // any window which when it is the last of its type closed causes the
   // application to exit.
-  virtual bool IsAppWindow() const { return false; }
+  virtual bool IsAppWindow() const;
 
   // Toggles the enable state for the Close button (and the Close menu item in
   // the system menu).