Expand SecurityStyleChanged interfaces to include explanations

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 f191672c9d9c21b3a98b07dc9bbd5e967c8b3dec..628c5ffa62ed0ac499d0569ffd037db166586baa 100644
--- a/content/public/browser/web_contents_delegate.h
+++ b/content/public/browser/web_contents_delegate.h
@@ -486,9 +486,13 @@ class CONTENT_EXPORT WebContentsDelegate {
   // default behavior is suppressed.
   virtual bool SaveFrame(const GURL& url, const Referrer& referrer);
 
-  // Can be overridden by a delegate to return the security style of the given
-  // |web_contents|. Returns SECURITY_STYLE_UNKNOWN if not overriden.
-  virtual SecurityStyle GetSecurityStyle(WebContents* web_contents);
+  // Can be overridden by a delegate to return the security style of the
+  // given |web_contents|, populating |security_style_explanation| to
+  // explain why the SecurityStyle was downgraded. Returns
+  // SECURITY_STYLE_UNKNOWN if not overriden.
+  virtual SecurityStyle GetSecurityStyle(
+      WebContents* web_contents,
+      SecurityStyleExplanation* security_style_explanation);
 
  protected:
   virtual ~WebContentsDelegate();