Aura: Support hovering restore & close buttons for full screen apps

chrome/browser/ui/views/frame/browser_non_client_frame_view_factory_aura.cc

Index: chrome/browser/ui/views/frame/browser_non_client_frame_view_factory_aura.cc
diff --git a/chrome/browser/ui/views/frame/browser_non_client_frame_view_factory_aura.cc b/chrome/browser/ui/views/frame/browser_non_client_frame_view_factory_aura.cc
index 178db2f682f2445b21e9c4b4851bd4154707b49b..f57eebf440bad9622cb5db163537499af084720b 100644
--- a/chrome/browser/ui/views/frame/browser_non_client_frame_view_factory_aura.cc
+++ b/chrome/browser/ui/views/frame/browser_non_client_frame_view_factory_aura.cc
@@ -7,8 +7,10 @@
 #include "ash/ash_switches.h"
 #include "ash/shell.h"
 #include "base/command_line.h"
+#include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/panels/panel_browser_frame_view.h"
 #include "chrome/browser/ui/panels/panel_browser_view.h"
+#include "chrome/browser/ui/views/frame/app_non_client_frame_view_aura.h"
 #include "chrome/browser/ui/views/frame/browser_view.h"
 #include "chrome/browser/ui/views/frame/compact_browser_frame_view.h"
 #include "chrome/browser/ui/views/frame/opaque_browser_frame_view.h"
@@ -29,6 +31,10 @@ BrowserNonClientFrameView* CreateBrowserNonClientFrameView(
   if (command_line->HasSwitch(ash::switches::kAuraTranslucentFrames))
     return new BrowserNonClientFrameViewAura(frame, browser_view);
 
+  // If this is an app window and it's maximized, use the special frame_view.
+  if (browser_view->browser()->is_app() && browser_view->IsMaximized())
+    return new AppNonClientFrameViewAura(frame, browser_view);
+
   return new OpaqueBrowserFrameView(frame, browser_view);
 }