Disable Win7 ASH mode in Release builds.

chrome/browser/ui/toolbar/wrench_menu_model.cc

Index: chrome/browser/ui/toolbar/wrench_menu_model.cc
diff --git a/chrome/browser/ui/toolbar/wrench_menu_model.cc b/chrome/browser/ui/toolbar/wrench_menu_model.cc
index 907b472182156981c1a566f5fb0c406a033680e1..c29f71ddcd0fdcbe62bddc869590cd48ed7c4458 100644
--- a/chrome/browser/ui/toolbar/wrench_menu_model.cc
+++ b/chrome/browser/ui/toolbar/wrench_menu_model.cc
@@ -556,9 +556,14 @@ void WrenchMenuModel::Build() {
   }
 
 #if defined(OS_WIN)
+  base::win::Version min_version_for_ash_mode = base::win::VERSION_WIN8;
+  // Windows 7 ASH mode is only supported in DEBUG for now.
+#if !defined(NDEBUG)
+  min_version_for_ash_mode = base::win::VERSION_WIN7;
+#endif
   // Windows 8 can support ASH mode using WARP, but Windows 7 requires a working
   // GPU compositor.
-  if ((base::win::GetVersion() >= base::win::VERSION_WIN7 &&
+  if ((base::win::GetVersion() >= min_version_for_ash_mode &&
       content::GpuDataManager::GetInstance()->CanUseGpuBrowserCompositor()) ||
       (base::win::GetVersion() >= base::win::VERSION_WIN8)) {
     if (browser_->host_desktop_type() == chrome::HOST_DESKTOP_TYPE_ASH) {