Revert of Add RoutingIDIssuer to help track routing id issues.

content/browser/renderer_host/render_widget_helper.cc

Index: content/browser/renderer_host/render_widget_helper.cc
diff --git a/content/browser/renderer_host/render_widget_helper.cc b/content/browser/renderer_host/render_widget_helper.cc
index eceb4071e2616baff8247e2f965a4ab1db01986b..e9d83f49f14dd822f7c420c00fa2b744887a7184 100644
--- a/content/browser/renderer_host/render_widget_helper.cc
+++ b/content/browser/renderer_host/render_widget_helper.cc
@@ -16,7 +16,6 @@
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
-#include "content/browser/renderer_host/routing_id_issuer.h"
 #include "content/common/view_messages.h"
 
 namespace content {
@@ -38,7 +37,6 @@
 
 RenderWidgetHelper::RenderWidgetHelper()
     : render_process_id_(-1),
-      routing_id_issuer_(RoutingIDIssuer::Create()),
       resource_dispatcher_host_(NULL) {
 }
 
@@ -65,11 +63,7 @@
 }
 
 int RenderWidgetHelper::GetNextRoutingID() {
-  return routing_id_issuer_->IssueNext();
-}
-
-bool RenderWidgetHelper::IsRoutingIDProbablyValid(int routing_id) const {
-  return routing_id_issuer_->IsProbablyValid(routing_id);
+  return next_routing_id_.GetNext() + 1;
 }
 
 // static