Implement WebPrescientNetworking to trigger preconnect from Blink

content/public/renderer/content_renderer_client.h

Index: content/public/renderer/content_renderer_client.h
diff --git a/content/public/renderer/content_renderer_client.h b/content/public/renderer/content_renderer_client.h
index 8d3c7379d2b158d6e71b2ea15778ee6d0685fc28..728c41293b478fe8eb3ec3ff0a27cf63d2a8e5cf 100644
--- a/content/public/renderer/content_renderer_client.h
+++ b/content/public/renderer/content_renderer_client.h
@@ -15,6 +15,7 @@
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebNavigationPolicy.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebNavigationType.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPageVisibilityState.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebPreconnectMotivation.h"
 #include "v8/include/v8.h"
 
 class GURL;
@@ -213,6 +214,9 @@ class CONTENT_EXPORT ContentRendererClient {
                                              size_t length);
   virtual bool IsLinkVisited(unsigned long long link_hash);
   virtual void PrefetchHostName(const char* hostname, size_t length) {}
+  virtual void Preconnect(const GURL& url,
+                          WebKit::WebPreconnectMotivation motivation,
+                          uint32_t motivationVariationId) {}

[jam, 2013/05/07 16:22:36]

are changes to this file leftover?

[kouhei (in TOK), 2013/05/07 16:30:47]

Yes. This needs to be removed.
Thank you for pointing it out. 

   virtual bool ShouldOverridePageVisibilityState(
       const RenderView* render_view,
       WebKit::WebPageVisibilityState* override_state) const;