Handle <link rel=prerender> in chrome.

content/renderer/render_view.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_view.h"
 
 #include <algorithm>
 #include <cmath>
 #include <string>
 #include <vector>
@@ skipping 2554 matching lines @@
   }
 
   if (data_source) {
     NavigationState* state = NavigationState::FromDataSource(data_source);
     if (state && state->is_cache_policy_override_set())
       request.setCachePolicy(state->cache_policy_override());
   }
 
   if (top_data_source) {
     NavigationState* state = NavigationState::FromDataSource(top_data_source);
-    if (state && request.targetType() == WebURLRequest::TargetIsPrefetch)
+    // TODO(gavinp): separate out prefetching and prerender field trials
+    // if the rel=prerender rel type is sticking around.
+    if (state && (request.targetType() == WebURLRequest::TargetIsPrefetch ||
+                  request.targetType() == WebURLRequest::TargetIsPrerender))
       state->set_was_prefetcher(true);
   }
 
   request.setRequestorID(routing_id_);
   request.setHasUserGesture(frame->isProcessingUserGesture());
 
   if (!renderer_preferences_.enable_referrers)
     request.clearHTTPHeaderField("Referer");
 
   // Temporary metrics, see site_isolation_metrics.h
@@ skipping 1593 matching lines @@
     const webkit_glue::CustomContextMenuContext& custom_context) {
   if (custom_context.is_pepper_menu)
     pepper_delegate_.OnContextMenuClosed(custom_context);
   else
     context_menu_node_.reset();
 }
 
 void RenderView::OnNetworkStateChanged(bool online) {
   WebNetworkStateNotifier::setOnLine(online);
 }