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

content/browser/dom_storage/session_storage_namespace_impl.cc

Index: content/browser/dom_storage/session_storage_namespace_impl.cc
diff --git a/content/browser/dom_storage/session_storage_namespace_impl.cc b/content/browser/dom_storage/session_storage_namespace_impl.cc
index ee861b2fbf0d3d90edac0f60313d3c58d2b690d6..a1f7f2dd7f7cc08239fe02fafe91360714a5b9d4 100644
--- a/content/browser/dom_storage/session_storage_namespace_impl.cc
+++ b/content/browser/dom_storage/session_storage_namespace_impl.cc
@@ -25,13 +25,6 @@ SessionStorageNamespaceImpl::SessionStorageNamespaceImpl(
     : session_(new DOMStorageSession(context->context(), persistent_id)) {
 }
 
-SessionStorageNamespaceImpl::SessionStorageNamespaceImpl(
-    SessionStorageNamespaceImpl* master_session_storage_namespace)
-    : session_(new DOMStorageSession(
-          master_session_storage_namespace->session_.get())) {
-}
-
-
 int64 SessionStorageNamespaceImpl::id() const {
   return session_->namespace_id();
 }
@@ -65,32 +58,4 @@ SessionStorageNamespaceImpl::SessionStorageNamespaceImpl(
 SessionStorageNamespaceImpl::~SessionStorageNamespaceImpl() {
 }
 
-void SessionStorageNamespaceImpl::AddTransactionLogProcessId(int process_id) {
-  session_->AddTransactionLogProcessId(process_id);
-}
-
-void SessionStorageNamespaceImpl::RemoveTransactionLogProcessId(
-    int process_id) {
-  session_->RemoveTransactionLogProcessId(process_id);
-}
-
-void SessionStorageNamespaceImpl::Merge(
-    bool actually_merge,
-    int process_id,
-    SessionStorageNamespace* other,
-    const MergeResultCallback& callback) {
-  SessionStorageNamespaceImpl* other_impl =
-      static_cast<SessionStorageNamespaceImpl*>(other);
-  session_->Merge(
-      actually_merge, process_id, other_impl->session_.get(), callback);
-}
-
-bool SessionStorageNamespaceImpl::IsAliasOf(SessionStorageNamespace* other) {
-  return persistent_id() == other->persistent_id();
-}
-
-SessionStorageNamespace* SessionStorageNamespaceImpl::CreateAlias() {
-  return new SessionStorageNamespaceImpl(this);
-}
-
 }  // namespace content