Query the existence other forms of browsing history.

components/history/core/test/fake_web_history_service.cc

Index: components/history/core/test/fake_web_history_service.cc
diff --git a/components/history/core/test/fake_web_history_service.cc b/components/history/core/test/fake_web_history_service.cc
index 2739974eec5669576689b8058928fea75d90805e..ead68113838550714c203dfded4f906e690ea48c 100644
--- a/components/history/core/test/fake_web_history_service.cc
+++ b/components/history/core/test/fake_web_history_service.cc
@@ -34,6 +34,7 @@ class FakeRequest : public WebHistoryService::Request {
   int GetResponseCode() override;
   const std::string& GetResponseBody() override;
   void SetPostData(const std::string& post_data) override;
+  void SetUserAgent(const std::string& user_agent) override;
   void Start() override;
 
  private:
@@ -92,6 +93,10 @@ void FakeRequest::SetPostData(const std::string& post_data) {
   // Unused.
 };
 
+void FakeRequest::SetUserAgent(const std::string& user_agent) {
+  // Unused.
+};
+
 void FakeRequest::Start() {
   is_pending_ = true;
   callback_.Run(this, emulate_success_);