PepperWebSocketHost should not call blink::WebSocket APIs after closed.

chrome/test/ppapi/ppapi_browsertest.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/test/ppapi/ppapi_test.h"
 
 #include "base/test/test_timeouts.h"
 #include "build/build_config.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 960 matching lines @@
       LIST_TEST(WebSocket_StressedSendReceive) \
       LIST_TEST(WebSocket_BufferedAmount) \
   )
 
 #define RUN_WEBSOCKET_SUBTESTS_2 \
   RunTestWithWebSocketServer( \
       LIST_TEST(WebSocket_AbortCallsWithCallback) \
       LIST_TEST(WebSocket_AbortSendMessageCall) \
       LIST_TEST(WebSocket_AbortCloseCall) \
       LIST_TEST(WebSocket_AbortReceiveMessageCall) \
+      LIST_TEST(WebSocket_ClosedFromServerWhileSending) \
       LIST_TEST(WebSocket_CcInterfaces) \
       LIST_TEST(WebSocket_UtilityInvalidConnect) \
       LIST_TEST(WebSocket_UtilityProtocols) \
       LIST_TEST(WebSocket_UtilityGetURL) \
       LIST_TEST(WebSocket_UtilityValidConnect) \
       LIST_TEST(WebSocket_UtilityInvalidClose) \
       LIST_TEST(WebSocket_UtilityValidClose) \
       LIST_TEST(WebSocket_UtilityGetProtocol) \
       LIST_TEST(WebSocket_UtilityTextSendReceive) \
       LIST_TEST(WebSocket_UtilityBinarySendReceive) \
@@ skipping 341 matching lines @@
           LIST_TEST(FlashDRM_GetHmonitor)
           LIST_TEST(FlashDRM_GetVoucherFile));
 }
 
 TEST_PPAPI_IN_PROCESS(TalkPrivate)
 TEST_PPAPI_OUT_OF_PROCESS(TalkPrivate)
 
 #if defined(OS_CHROMEOS)
 TEST_PPAPI_OUT_OF_PROCESS(OutputProtectionPrivate)
 #endif