Mojo: add support for cookies to HTMLViewer.

mojo/services/html_viewer/webcookiejar_impl.cc

+// Copyright 2014 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 "mojo/services/html_viewer/webcookiejar_impl.h"
+
+#include "base/bind.h"
+#include "third_party/WebKit/public/platform/WebURL.h"
+
+namespace mojo {
+namespace {
+
+void CopyBool(bool* output, bool input) {
+  *output = input;
+}
+
+void CopyString(String* output, const String& input) {
+  *output = input;
+}
+
+}  // namespace
+
+WebCookieJarImpl::WebCookieJarImpl(CookieStorePtr store)
+    : store_(store.Pass()) {
+}
+
+WebCookieJarImpl::~WebCookieJarImpl() {
+}
+
+void WebCookieJarImpl::setCookie(const blink::WebURL& url,
+                                 const blink::WebURL& first_party_for_cookies,
+                                 const blink::WebString& cookie) {
+  bool success;
+  store_->Set(url.string().utf8(), cookie.utf8(),
+              base::Bind(&CopyBool, &success));
+
+  // Wait to ensure the cookie was set before advancing. That way any
+  // subsequent URL request will see the changes to the cookie store.
+  //
+  // TODO(darin): Consider using associated message pipes for the CookieStore
+  // and URLLoader, so that we could let this method call run asynchronously
+  // without suffering an ordering problem. See crbug/386825.
+  //
+  store_.WaitForIncomingMethodCall();
+}
+
+blink::WebString WebCookieJarImpl::cookies(
+    const blink::WebURL& url,
+    const blink::WebURL& first_party_for_cookies) {
+  String result;
+  store_->Get(url.string().utf8(), base::Bind(&CopyString, &result));
+
+  // Wait for the result. Since every outbound request we make to the cookie
+  // store is followed up with WaitForIncomingMethodCall, we can be sure that
+  // the next incoming method call will be the response to our request.
+  store_.WaitForIncomingMethodCall();
+  if (!result)
+    return blink::WebString();
+
+  return blink::WebString::fromUTF8(result);
+}
+
+blink::WebString WebCookieJarImpl::cookieRequestHeaderFieldValue(
+    const blink::WebURL& url,
+    const blink::WebURL& first_party_for_cookies) {
+  return cookies(url, first_party_for_cookies);
+}
+
+}  // namespace mojo