[Tests not passing yet] Remove prerender sessionStorage namespace merging.

chrome/browser/prerender/prerender_handle.cc

Index: chrome/browser/prerender/prerender_handle.cc
diff --git a/chrome/browser/prerender/prerender_handle.cc b/chrome/browser/prerender/prerender_handle.cc
index f6e4c5e688c7e02033955342a9fb22c0c5601900..fc61099f2935363ec877f0f9360dfd9a1d43b2d7 100644
--- a/chrome/browser/prerender/prerender_handle.cc
+++ b/chrome/browser/prerender/prerender_handle.cc
@@ -136,17 +136,4 @@ bool PrerenderHandle::RepresentingSamePrerenderAs(
       && prerender_data_.get() == other->prerender_data_.get();
 }
 
-content::SessionStorageNamespace*
-PrerenderHandle::GetSessionStorageNamespace() const {
-  if (!prerender_data_.get())
-    return NULL;
-  return prerender_data_->contents()->GetSessionStorageNamespace();
-}
-
-int PrerenderHandle::GetChildId() const {
-  if (!prerender_data_.get())
-    return -1;
-  return prerender_data_->contents()->child_id();
-}
-
 }  // namespace prerender