Add TimeToScrollUpdateSwapBegin2 to UKM

content/public/browser/content_browser_client.h

Index: content/public/browser/content_browser_client.h
diff --git a/content/public/browser/content_browser_client.h b/content/public/browser/content_browser_client.h
index a3d217fd94465febd92a71e324c331ac6150658f..e58f1099eba8054b37136f46854907fe59353b47 100644
--- a/content/public/browser/content_browser_client.h
+++ b/content/public/browser/content_browser_client.h
@@ -87,10 +87,6 @@ namespace rappor {
 class RapporService;
 }
 
-namespace ukm {
-class UkmRecorder;
-}
-
 namespace sandbox {
 class TargetPolicy;
 }
@@ -804,9 +800,6 @@ class CONTENT_EXPORT ContentBrowserClient {
   // Returns the RapporService from the browser process.
   virtual ::rappor::RapporService* GetRapporService();
 
-  // Returns the UkmRecorder from the browser process.
-  virtual ::ukm::UkmRecorder* GetUkmRecorder();
-
   // Provides parameters for initializing the global task scheduler. Default
   // params are used if this returns nullptr.
   virtual std::unique_ptr<base::TaskScheduler::InitParams>