Componentize OriginsSeenService & provide iOS factory.

chrome/browser/tab_contents/origins_seen_service_factory.cc

Index: chrome/browser/tab_contents/origins_seen_service_factory.cc
diff --git a/chrome/browser/tab_contents/origins_seen_service_factory.cc b/chrome/browser/tab_contents/origins_seen_service_factory.cc
index 67f00f90077d59f18a83b52db019db0de8f95884..54ba44ada0cac8f07e6de179044dafe1c397b598 100644
--- a/chrome/browser/tab_contents/origins_seen_service_factory.cc
+++ b/chrome/browser/tab_contents/origins_seen_service_factory.cc
@@ -8,9 +8,10 @@
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 
 // static
-OriginsSeenService* OriginsSeenServiceFactory::GetForBrowserContext(
+navigation_metrics::OriginsSeenService*
+OriginsSeenServiceFactory::GetForBrowserContext(
     content::BrowserContext* context) {
-  return static_cast<OriginsSeenService*>(
+  return static_cast<navigation_metrics::OriginsSeenService*>(
       GetInstance()->GetServiceForBrowserContext(context, true));
 }
 
@@ -22,7 +23,7 @@ OriginsSeenServiceFactory* OriginsSeenServiceFactory::GetInstance() {
 // static
 KeyedService* OriginsSeenServiceFactory::BuildInstanceFor(
     content::BrowserContext* context) {
-  return new OriginsSeenService();
+  return new navigation_metrics::OriginsSeenService();
 }
 
 OriginsSeenServiceFactory::OriginsSeenServiceFactory()