Remove a variety of no-longer-used query params.

chrome/browser/ui/search/search_tab_helper.cc

Index: chrome/browser/ui/search/search_tab_helper.cc
diff --git a/chrome/browser/ui/search/search_tab_helper.cc b/chrome/browser/ui/search/search_tab_helper.cc
index e20bcfe611b4cb15b19e81baeaa1ac21362269b7..22fe0dbe8e0c8c3366acb9aea623a6af1ccdf6aa 100644
--- a/chrome/browser/ui/search/search_tab_helper.cc
+++ b/chrome/browser/ui/search/search_tab_helper.cc
@@ -338,12 +338,8 @@ void SearchTabHelper::NavigationEntryCommitted(
     return;
 
   if (search::ShouldAssignURLToInstantRenderer(web_contents_->GetURL(),
-                                               profile())) {
-    InstantService* instant_service =
-        InstantServiceFactory::GetForProfile(profile());
-    ipc_router_.SetOmniboxStartMargin(instant_service->omnibox_start_margin());
+                                               profile()))
     ipc_router_.SetDisplayInstantResults();
-  }
 
   UpdateMode(true, false);
 
@@ -408,10 +404,6 @@ void SearchTabHelper::LogMostVisitedItemsSource(
   }
 }
 
-void SearchTabHelper::OmniboxStartMarginChanged(int omnibox_start_margin) {
-  ipc_router_.SetOmniboxStartMargin(omnibox_start_margin);
-}
-
 void SearchTabHelper::FocusOmnibox(OmniboxFocusState state) {
 // TODO(kmadhusu): Move platform specific code from here and get rid of #ifdef.
 #if !defined(OS_ANDROID)