This patch enables "mailto" links in WebViews.

extensions/browser/guest_view/web_view/web_view_guest.cc

Index: extensions/browser/guest_view/web_view/web_view_guest.cc
diff --git a/extensions/browser/guest_view/web_view/web_view_guest.cc b/extensions/browser/guest_view/web_view/web_view_guest.cc
index 5e13a719f6f12aae1e900510ca410b5f0c04d760..7ad18e1a02b2d19a5652190f66177707826f3250 100644
--- a/extensions/browser/guest_view/web_view/web_view_guest.cc
+++ b/extensions/browser/guest_view/web_view/web_view_guest.cc
@@ -810,6 +810,10 @@ void WebViewGuest::DidFailProvisionalLoad(
     int error_code,
     const base::string16& error_description,
     bool was_ignored_by_handler) {
+  // Suppress loadabort for "mailto" URLs.
+  if (validated_url.SchemeIs("mailto"))

[lazyboy, 2015/07/13 20:27:28]

url::kMailToScheme

+    return;
+
   LoadAbort(!render_frame_host->GetParent(), validated_url, error_code,
             net::ErrorToShortString(error_code));
 }