Plumb Blink notification actions to button UI on desktop

content/public/common/platform_notification_action.cc

Index: content/public/common/platform_notification_action.cc
diff --git a/content/public/browser/security_style_explanations.cc b/content/public/common/platform_notification_action.cc
similarity index 53%
copy from content/public/browser/security_style_explanations.cc
copy to content/public/common/platform_notification_action.cc
index 8f389f889611aa268c9e0ab65965bf3e400b75f3..3f27f8a963173b53567d07c76ac8aa5d7303048b 100644
--- a/content/public/browser/security_style_explanations.cc
+++ b/content/public/common/platform_notification_action.cc
@@ -2,14 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "content/public/browser/security_style_explanations.h"
+#include "content/public/common/platform_notification_action.h"
 
 namespace content {
 
-SecurityStyleExplanations::SecurityStyleExplanations() {
-}
+PlatformNotificationAction::PlatformNotificationAction() {}
 
-SecurityStyleExplanations::~SecurityStyleExplanations() {
-}
+PlatformNotificationAction::~PlatformNotificationAction() {}
 
 }  // namespace content