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

chrome/browser/ui/search/search_ipc_router.cc

Index: chrome/browser/ui/search/search_ipc_router.cc
diff --git a/chrome/browser/ui/search/search_ipc_router.cc b/chrome/browser/ui/search/search_ipc_router.cc
index 18de36433ac9b8ebd33a1c4cf12ea955f2e99aca..0198615c5c67d94eb1dd4c90b153ef7d5a7bde2c 100644
--- a/chrome/browser/ui/search/search_ipc_router.cc
+++ b/chrome/browser/ui/search/search_ipc_router.cc
@@ -98,13 +98,6 @@ void SearchIPCRouter::SetSuggestionToPrefetch(
                                                           suggestion));
 }
 
-void SearchIPCRouter::SetOmniboxStartMargin(int start_margin) {
-  if (!policy_->ShouldSendSetOmniboxStartMargin())
-    return;
-
-  Send(new ChromeViewMsg_SearchBoxMarginChange(routing_id(), start_margin));
-}
-
 void SearchIPCRouter::SetInputInProgress(bool input_in_progress) {
   if (!policy_->ShouldSendSetInputInProgress(is_active_tab_))
     return;