PlzNavigate: AppCache support.

content/browser/appcache/appcache_navigation_handle.cc

Index: content/browser/appcache/appcache_navigation_handle.cc
diff --git a/content/browser/appcache/appcache_navigation_handle.cc b/content/browser/appcache/appcache_navigation_handle.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b087466b3de56e436a19519eb3c8603a51484bf8
--- /dev/null
+++ b/content/browser/appcache/appcache_navigation_handle.cc
@@ -0,0 +1,54 @@
+// Copyright 2016 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/browser/appcache/appcache_navigation_handle.h"
+
+#include "base/bind.h"
+#include "content/browser/appcache/appcache_navigation_handle_core.h"
+#include "content/browser/appcache/chrome_appcache_service.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/common/appcache_info.h"
+
+namespace {
+// PlzNavigate: Used to generate the host id for a navigation initiated by the
+// browser. Starts at -2 and keeps going down.
+static int g_next_appcache_host_id = -1;
+}
+
+namespace content {
+
+AppCacheNavigationHandle::AppCacheNavigationHandle(
+    ChromeAppCacheService* appcache_service)
+    : appcache_host_id_(kAppCacheNoHostId),
+      core_(nullptr),
+      weak_factory_(this) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  appcache_host_id_ = g_next_appcache_host_id--;
+  core_ = new AppCacheNavigationHandleCore(
+      weak_factory_.GetWeakPtr(),
+      appcache_service,
+      appcache_host_id_);
+  BrowserThread::PostTask(
+      BrowserThread::IO,
+      FROM_HERE,
+      base::Bind(&AppCacheNavigationHandleCore::Initialize,
+                 base::Unretained(core_)));
+}
+
+AppCacheNavigationHandle::~AppCacheNavigationHandle() {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  // Delete the AppCacheNavigationHandleCore on the IO thread.
+  BrowserThread::DeleteSoon(BrowserThread::IO, FROM_HERE, core_);
+}
+
+void AppCacheNavigationHandle::CommitNavigation(int process_id) {
+  BrowserThread::PostTask(
+      BrowserThread::IO,
+      FROM_HERE,
+      base::Bind(&AppCacheNavigationHandleCore::CommitNavigation,
+                 base::Unretained(core_),
+                 process_id));
+}
+
+}  // namespace content