Generates the DTLS identity in browser process and returns it to render process.

content/browser/media/webrtc_identity_store_unittest.cc

+// Copyright (c) 2013 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 "base/bind.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/message_loop.h"
+#include "base/run_loop.h"
+#include "base/synchronization/waitable_event.h"
+#include "base/threading/sequenced_worker_pool.h"
+#include "content/browser/media/webrtc_identity_store.h"
+#include "content/browser/renderer_host/media/webrtc_identity_service_host.h"
+#include "content/common/media/webrtc_identity_messages.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "content/public/test/test_utils.h"
+#include "googleurl/src/gurl.h"
+#include "net/base/net_errors.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace content {
+
+class WebRTCIdentityStoreTest : public testing::Test {
+ public:
+  WebRTCIdentityStoreTest()
+      : browser_thread_bundle_(TestBrowserThreadBundle::IO_MAINLOOP),
+        sequenced_worker_pool_(
+            new base::SequencedWorkerPool(3, "WebRTCIdentityStoreTest")),
+        webrtc_identity_store_(new WebRTCIdentityStore()) {
+    webrtc_identity_store_->SetTaskRunnerForTesting(sequenced_worker_pool_);
+  }
+
+  virtual ~WebRTCIdentityStoreTest() { sequenced_worker_pool_->Shutdown(); }
+
+ protected:
+  TestBrowserThreadBundle browser_thread_bundle_;
+  scoped_refptr<base::SequencedWorkerPool> sequenced_worker_pool_;
+  scoped_ptr<WebRTCIdentityStore> webrtc_identity_store_;
+};
+
+static void OnRequestCompleted(bool* completed,
+                        int error,
+                        const std::string& certificate,
+                        const std::string& private_key) {
+  ASSERT_EQ(net::OK, error);
+  ASSERT_NE("", certificate);
+  ASSERT_NE("", private_key);
+  *completed = true;
+}
+
+TEST_F(WebRTCIdentityStoreTest, RequestIdentity) {
+  bool completed = false;
+  base::Closure cancel_callback =
+      webrtc_identity_store_->RequestIdentity(
+          GURL("http://google.com"),
+          "a",
+          "b",
+          base::Bind(&OnRequestCompleted, base::Unretained(&completed)));

[Ami GONE FROM CHROMIUM, 2013/06/27 21:30:32]

Is Unretained really necessary here??

[jiayl, 2013/06/27 21:48:28]

I thought it won't compile without it because it will try addref it. But
apparently that's not true. 

[Ami GONE FROM CHROMIUM, 2013/06/27 22:13:08]

That concern only applies to the |this| argument bound by Bind, if one exists. 
Since you're binding a free function here, there is no |this| argument.  Other
(non-|this|) arguments to Bind don't get addref'd unless you use Owned etc.

+  ASSERT_FALSE(cancel_callback.is_null());
+  sequenced_worker_pool_->FlushForTesting();
+  base::RunLoop().RunUntilIdle();
+  EXPECT_EQ(true, completed);
+}
+
+TEST_F(WebRTCIdentityStoreTest, CancelRequest) {
+  bool completed = false;
+  base::Closure cancel_callback =
+      webrtc_identity_store_->RequestIdentity(
+          GURL("http://google.com"),
+          "a",
+          "b",
+          base::Bind(&OnRequestCompleted, base::Unretained(&completed)));
+  ASSERT_FALSE(cancel_callback.is_null());
+  cancel_callback.Run();
+  sequenced_worker_pool_->FlushForTesting();
+  base::RunLoop().RunUntilIdle();
+  EXPECT_EQ(false, completed);
+}
+
+TEST_F(WebRTCIdentityStoreTest, MultipleRequests) {
+  bool completed_1 = false;
+  bool completed_2 = false;
+  base::Closure cancel_callback_1 =
+    webrtc_identity_store_->RequestIdentity(
+        GURL("http://foo.com"),
+        "a",
+        "b",
+        base::Bind(&OnRequestCompleted, base::Unretained(&completed_1)));
+  ASSERT_FALSE(cancel_callback_1.is_null());
+
+  base::Closure cancel_callback_2 =
+    webrtc_identity_store_->RequestIdentity(
+        GURL("http://bar.com"),
+        "a",
+        "b",
+        base::Bind(&OnRequestCompleted, base::Unretained(&completed_2)));
+  ASSERT_FALSE(cancel_callback_2.is_null());
+
+  sequenced_worker_pool_->FlushForTesting();
+  base::RunLoop().RunUntilIdle();
+  EXPECT_EQ(true, completed_1);
+  EXPECT_EQ(true, completed_2);
+}
+
+}  // namespace content