Fix copying from interstitial pages on OSX.

content/browser/frame_host/interstitial_page_impl.cc

Index: content/browser/frame_host/interstitial_page_impl.cc
diff --git a/content/browser/frame_host/interstitial_page_impl.cc b/content/browser/frame_host/interstitial_page_impl.cc
index 558117393ec17a9d85b22b4270067bb0051293df..9ce6261c6ce8a290719e8a2f3099d73c3f7f7141 100644
--- a/content/browser/frame_host/interstitial_page_impl.cc
+++ b/content/browser/frame_host/interstitial_page_impl.cc
@@ -700,6 +700,10 @@ InterstitialPageDelegate* InterstitialPageImpl::GetDelegateForTesting() {
   return delegate_.get();
 }
 
+WebContents* InterstitialPageImpl::GetAsWebContents() {
+  return web_contents_;

[Charlie Reis, 2015/04/27 23:39:26]

This feels super risky to me.

If callers hear something from an interstitial RenderFrameHost and assume it's
from the WebContents, it's really easy for them to confuse the interstitial's
URL or process with the last committed URL or process in the WebContents.  That
could be a big security bug if the last committed page is a WebUI and the
interstitial is for an untrusted page.

+}
+
 void InterstitialPageImpl::DontCreateViewForTesting() {
   create_view_ = false;
 }