Update to Chromium revision a106f0ab (#464641)

- Remove CefWindowInfo.transparent_painting_enabled. Set
  CefBrowserSettings.background_color to an opaque or transparent
  value instead.

libcef/common/value_base.h

@@ -109,6 +109,11 @@ class CefValueController
   // |other|. The |other| controller must already be locked.
   void TakeFrom(CefValueController* other);
 
+  // Replace all instances of |old_value| with |new_value|. Used in cases where
+  // move semantics may move the contents of an object without retaining the
+  // object pointer itself.
+  void Swap(void* old_value, void* new_value);
+
  protected:
   friend class base::RefCountedThreadSafe<CefValueController>;