Modifying prefetch to account for multi-profile.

chrome/browser/renderer_host/chrome_render_message_filter.cc

Index: chrome/browser/renderer_host/chrome_render_message_filter.cc
===================================================================
--- chrome/browser/renderer_host/chrome_render_message_filter.cc	(revision 89645)
+++ chrome/browser/renderer_host/chrome_render_message_filter.cc	(working copy)
@@ -156,7 +156,8 @@
 
 void ChromeRenderMessageFilter::OnDnsPrefetch(
     const std::vector<std::string>& hostnames) {
-  chrome_browser_net::DnsPrefetchList(hostnames);
+  if (profile_->GetPredictor())
+    profile_->GetPredictor()->DnsPrefetchList(hostnames);
 }
 
 void ChromeRenderMessageFilter::OnRendererHistograms(
@@ -485,7 +486,9 @@
 void ChromeRenderMessageFilter::OnClearPredictorCache(int* result) {
   // This function is disabled unless the user has enabled
   // benchmarking extensions.
-  chrome_browser_net::ClearPredictorCache();
+  chrome_browser_net::Predictor* predictor = profile_->GetPredictor();
+  if (predictor)
+    predictor->DiscardAllResults();
   *result = 0;
 }