Handle interface to prerenders.

chrome/browser/prerender/prerender_handle.cc

+// Copyright (c) 2012 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 "chrome/browser/prerender/prerender_handle.h"
+
+#include "base/basictypes.h"
+#include "chrome/browser/prerender/prerender_contents.h"
+
+namespace prerender {
+
+PrerenderHandle::~PrerenderHandle() {
+  DCHECK(!contents_);
+}
+
+bool PrerenderHandle::Matches(
+    const GURL& url,
+    const content::SessionStorageNamespace* session_storage_namespace) const {
+  DCHECK(CalledOnValidThread());
+  DCHECK(!IsPending());
+  return contents_->Matches(url, session_storage_namespace);
+}
+
+bool PrerenderHandle::IsPending() const {
+  DCHECK(CalledOnValidThread());
+  return !contents_;
+}
+
+bool PrerenderHandle::DidFinishLoading() const {
+  DCHECK(CalledOnValidThread());
+  if (IsPending())
+    return false;
+  return contents_->has_finished_loading();
+}
+
+void PrerenderHandle::DecrementClientCount() {
+  contents_->DecrementClientCount();

[dominich, 2012/06/22 15:36:16]

Where do we increment the client count?

+}
+
+PrerenderHandle::PrerenderHandle() : contents_(NULL) {
+}
+
+void PrerenderHandle::AddDuplicate(
+    scoped_ptr<PrerenderHandle> new_duplicate_handle) {
+  DCHECK(new_duplicate_handle->IsPending());
+  PrerenderHandle* old_duplicate_handle = duplicate_handle_.release();
+
+  new_duplicate_handle->contents_ = contents_;
+  new_duplicate_handle->duplicate_handle_.reset(old_duplicate_handle);
+  duplicate_handle_.swap(new_duplicate_handle);
+}
+
+void PrerenderHandle::SetContents(PrerenderContents* contents) {
+  contents_ = contents;
+  if (duplicate_handle_.get())
+    duplicate_handle_->SetContents(contents);
+}
+
+}  // namespace prerender