Surface SCT (Signed Certificate Timestamp) counts in the Security panel.

content/public/browser/web_contents_delegate.h

Index: content/public/browser/web_contents_delegate.h
diff --git a/content/public/browser/web_contents_delegate.h b/content/public/browser/web_contents_delegate.h
index ed46e438deebf2c5b5993d5a307c1864989a0334..2a5bf36bbc082cfc5260f5cf896c2fa2b237f7be 100644
--- a/content/public/browser/web_contents_delegate.h
+++ b/content/public/browser/web_contents_delegate.h
@@ -518,6 +518,11 @@ class CONTENT_EXPORT WebContentsDelegate {
   virtual void ShowCertificateViewerInDevTools(
       WebContents* web_contents,
       int cert_id);
+  virtual void GetCertificateTransparencySummary(bool is_valid_ev,
+                                                 int num_unknown_scts,
+                                                 int num_invalid_scts,
+                                                 int num_valid_scts,
+                                                 std::string* summary);

[Ryan Sleevi, 2016/01/19 19:39:00]

DESIGN: Please consider using the appropriate C++ types for this (size_t), as
per https://www.chromium.org/developers/coding-style#TOC-Types

I'm aware that you'll need to convert to int as you cross the boundary to JS,
but the safer way to do that is to keep your API preferring the safe size
(size_t) throughout, and in your bindings glue, doing the safe_numerics casts
there.

[lgarron, 2016/01/22 22:51:27]

This *particular* function is actually the wrong side of the API [1], but I've
gone ahead and pushed the cases down into `InspectorResourceAgent.cpp`.
safe_numerics isn't available there, but I asked Justin and he recommended
safeCast() as a Blink alternative.

[1]
https://code.google.com/p/chromium/codesearch#chromium/src/third_party/WebKit...

 
   // Called when the active render widget is forwarding a RemoteChannel
   // compositor proto.  This is used in Blimp mode.