Update app menu button MD colors for the notification case.

chrome/browser/ui/global_error/global_error.cc

Index: chrome/browser/ui/global_error/global_error.cc
diff --git a/chrome/browser/ui/global_error/global_error.cc b/chrome/browser/ui/global_error/global_error.cc
index ca4b11ecef82640859e139531205e19cd70695df..098d99b035303df9bdda50b93576a5712b03b91c 100644
--- a/chrome/browser/ui/global_error/global_error.cc
+++ b/chrome/browser/ui/global_error/global_error.cc
@@ -29,8 +29,8 @@ gfx::Image GlobalError::MenuItemIcon() {
   return ResourceBundle::GetSharedInstance().GetNativeImageNamed(
       IDR_INPUT_ALERT_MENU);
 #else
-  return gfx::Image(
-      gfx::CreateVectorIcon(gfx::VectorIconId::WARNING, 18, gfx::kAmber));
+  return gfx::Image(gfx::CreateVectorIcon(gfx::VectorIconId::WARNING, 18,
+                                          gfx::kGoogleYellow700));
 #endif
 }