Fixing opacity for browser frame window on ASH/Windows.

ash/shell/content_client/shell_browser_main_parts.cc

Index: ash/shell/content_client/shell_browser_main_parts.cc
diff --git a/ash/shell/content_client/shell_browser_main_parts.cc b/ash/shell/content_client/shell_browser_main_parts.cc
index 478453de02044d110ae4dad749384ba38268744f..a9146a6c1293632613098dfde17e4a53660e09fa 100644
--- a/ash/shell/content_client/shell_browser_main_parts.cc
+++ b/ash/shell/content_client/shell_browser_main_parts.cc
@@ -57,7 +57,8 @@ class ShellViewsDelegate : public views::TestViewsDelegate {
       views::Widget* widget) OVERRIDE {
     return ash::Shell::GetInstance()->CreateDefaultNonClientFrameView(widget);
   }
-  virtual bool UseTransparentWindows() const OVERRIDE {
+  virtual bool UseTransparentWindows(
+      views::Widget::InitParams* params) const OVERRIDE {
     // Ash uses transparent window frames.
     return true;
   }