Ensure that WebRTC AEC recording checkbox is not set if cancelling file dialog.

content/browser/media/webrtc_internals_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/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/values.h"
 #include "content/browser/media/webrtc_internals.h"
 #include "content/browser/media/webrtc_internals_ui_observer.h"
 #include "content/public/test/test_browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace content {
 
 namespace {
 
 static const std::string kContraints = "c";
 static const std::string kServers = "s";
 static const std::string kUrl = "u";
 
 class MockWebRTCInternalsProxy : public WebRTCInternalsUIObserver {
  public:
   virtual void OnUpdate(const std::string& command,
                         const base::Value* value) OVERRIDE {
     command_ = command;
-    value_.reset(value->DeepCopy());
+    if (value)
+      value_.reset(value->DeepCopy());
   }
 
   std::string command() {
     return command_;
   }
 
   base::Value* value() {
     return value_.get();
   }
 
@@ skipping 226 matching lines @@
 
   EXPECT_EQ("addStats", observer->command());
   base::DictionaryValue* dict = NULL;
   EXPECT_TRUE(observer->value()->GetAsDictionary(&dict));
 
   VerifyInt(dict, "pid", pid);
   VerifyInt(dict, "lid", lid);
   VerifyList(dict, "reports", list);
 }
 
+TEST_F(WebRTCInternalsTest, AecRecordingFileSelectionCanceled) {
+  scoped_ptr<MockWebRTCInternalsProxy> observer(new MockWebRTCInternalsProxy());
+  WebRTCInternals::GetInstance()->AddObserver(observer.get());
+  WebRTCInternals::GetInstance()->FileSelectionCanceled(NULL);
+  EXPECT_EQ("aecRecordingFileSelectionCancelled", observer->command());
+  EXPECT_EQ(NULL, observer->value());
+}
+
 }  // namespace content