Add a feature which, when enabled, blocks permissions after X prompt dismissals.

chrome/browser/permissions/permission_context_base.h

Index: chrome/browser/permissions/permission_context_base.h
diff --git a/chrome/browser/permissions/permission_context_base.h b/chrome/browser/permissions/permission_context_base.h
index 2ab7b7bb8526f3d9729344db2b68602770009fdc..0d7362886191607b4af799551158a63b0deda23e 100644
--- a/chrome/browser/permissions/permission_context_base.h
+++ b/chrome/browser/permissions/permission_context_base.h
@@ -9,9 +9,11 @@
 
 #include "base/callback.h"
 #include "base/containers/scoped_ptr_hash_map.h"
+#include "base/lazy_instance.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "build/build_config.h"
+#include "chrome/browser/permissions/permission_prompt_decision_log.h"
 #include "chrome/browser/permissions/permission_request.h"
 #include "components/content_settings/core/common/content_settings.h"
 #include "components/content_settings/core/common/content_settings_types.h"
@@ -157,9 +159,13 @@ class PermissionContextBase : public KeyedService {
   }
 
  private:
+  friend class PermissionContextBaseTests;
+
   // Called when a request is no longer used so it can be cleaned up.
   void CleanUpRequest(const PermissionRequestID& id);
 
+  static base::LazyInstance<PermissionPromptDecisionLog> prompt_decision_log_;

[raymes, 2016/08/05 03:27:47]

It actually seems like the overhead would be negligible to just instantiate one
of these per PermissionContextBase. It would simplify some of the test code too.
wdyt?

[dominickn, 2016/08/05 04:29:30]

Done.

+
   Profile* profile_;
   const content::PermissionType permission_type_;
   const ContentSettingsType content_settings_type_;