CompactNavigationBar for toolkit views build, with some design change per Cole's request.

chrome/browser/browser_window.h

Index: chrome/browser/browser_window.h
diff --git a/chrome/browser/browser_window.h b/chrome/browser/browser_window.h
index f41716677eccd66911fb2ecea8ef42e94568204b..ccbbf32695c7f65f0ed59b7c4b11f2812165e686 100644
--- a/chrome/browser/browser_window.h
+++ b/chrome/browser/browser_window.h
@@ -263,6 +263,11 @@ class BrowserWindow {
   // keyboard event if one exists, otherwise -1.
   virtual int GetCommandId(const NativeWebKeyboardEvent& event) = 0;
 
+#if defined(TOOLKIT_VIEWS)
+  // Toggles compact navigation bar.
+  virtual void ToggleCompactNavigationBar() = 0;
+#endif
+
   // Construct a BrowserWindow implementation for the specified |browser|.
   static BrowserWindow* CreateBrowserWindow(Browser* browser);