Expand SecurityStyleChanged interfaces to include explanations

content/public/browser/security_style_explanations.cc

Index: content/public/browser/security_style_explanations.cc
diff --git a/content/public/browser/interstitial_page_delegate.cc b/content/public/browser/security_style_explanations.cc
similarity index 53%
copy from content/public/browser/interstitial_page_delegate.cc
copy to content/public/browser/security_style_explanations.cc
index 60a441842b4af1ee688de6c4283e813f016059ec..8f389f889611aa268c9e0ab65965bf3e400b75f3 100644
--- a/content/public/browser/interstitial_page_delegate.cc
+++ b/content/public/browser/security_style_explanations.cc
@@ -2,12 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "content/public/browser/interstitial_page_delegate.h"
+#include "content/public/browser/security_style_explanations.h"
 
 namespace content {
-InterstitialPageDelegate::TypeID InterstitialPageDelegate::GetTypeForTesting()
-    const {
-  return nullptr;
+
+SecurityStyleExplanations::SecurityStyleExplanations() {
+}
+
+SecurityStyleExplanations::~SecurityStyleExplanations() {
 }
 
 }  // namespace content