Move chrome-specific SerializedNavigation code to chrome/.

chrome/browser/chrome_browser_main.cc

Index: chrome/browser/chrome_browser_main.cc
diff --git a/chrome/browser/chrome_browser_main.cc b/chrome/browser/chrome_browser_main.cc
index 570f33c4b9033c9cb8cab581dfc506b585bc0133..63b95a22ca6f5ee58b1cc8ce2be05c2a8eb9ca04 100644
--- a/chrome/browser/chrome_browser_main.cc
+++ b/chrome/browser/chrome_browser_main.cc
@@ -85,6 +85,7 @@
 #include "chrome/browser/profiles/profile_attributes_storage.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/profiles/profiles_state.h"
+#include "chrome/browser/sessions/chrome_serialized_navigation_driver.h"
 #include "chrome/browser/shell_integration.h"
 #include "chrome/browser/tracing/navigation_tracing.h"
 #include "chrome/browser/translate/translate_service.h"
@@ -1389,6 +1390,9 @@ void ChromeBrowserMainParts::PreBrowserStart() {
   // available at no cost in an indexed format. This enables activating
   // subresource filtering, if needed, also for page loads on start-up.
   g_browser_process->subresource_filter_ruleset_service();
+
+  sessions::ContentSerializedNavigationDriver::SetInstance(
+      ChromeSerializedNavigationDriver::GetInstance());
 }
 
 void ChromeBrowserMainParts::PostBrowserStart() {