Modifying prefetch to account for multi-profile.

chrome/browser/renderer_host/chrome_render_view_host_observer.cc

Index: chrome/browser/renderer_host/chrome_render_view_host_observer.cc
===================================================================
--- chrome/browser/renderer_host/chrome_render_view_host_observer.cc	(revision 89645)
+++ chrome/browser/renderer_host/chrome_render_view_host_observer.cc	(working copy)
@@ -5,6 +5,7 @@
 #include "chrome/browser/renderer_host/chrome_render_view_host_observer.h"
 
 #include "chrome/browser/dom_operation_notification_details.h"
+#include "chrome/browser/net/predictor.h"
 #include "chrome/browser/net/predictor_api.h"
 #include "chrome/common/render_messages.h"
 #include "content/browser/renderer_host/render_view_host.h"
@@ -14,8 +15,9 @@
 #include "content/common/view_messages.h"
 
 ChromeRenderViewHostObserver::ChromeRenderViewHostObserver(
-    RenderViewHost* render_view_host)
-    : RenderViewHostObserver(render_view_host) {
+    RenderViewHost* render_view_host, chrome_browser_net::Predictor* predictor)
+    : RenderViewHostObserver(render_view_host),
+      predictor_(predictor) {
 }
 
 ChromeRenderViewHostObserver::~ChromeRenderViewHostObserver() {
@@ -24,9 +26,13 @@
 void ChromeRenderViewHostObserver::Navigate(
     const ViewMsg_Navigate_Params& params) {
   const GURL& url = params.url;
+  if (!predictor_)
+    return;
   if (!render_view_host()->delegate()->IsExternalTabContainer() &&
-      (url.SchemeIs(chrome::kHttpScheme) || url.SchemeIs(chrome::kHttpsScheme)))
-    chrome_browser_net::PreconnectUrlAndSubresources(url);
+     (url.SchemeIs(chrome::kHttpScheme) ||
+      url.SchemeIs(chrome::kHttpsScheme))) {
+    predictor_->PreconnectUrlAndSubresources(url);
+  }
 }
 
 bool ChromeRenderViewHostObserver::OnMessageReceived(