Make sure that s_platform is non-null

third_party/WebKit/Source/platform/testing/TestingPlatformSupport.cpp

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 64 matching lines @@
 
 TestingPlatformSupport::TestingPlatformSupport()
     : TestingPlatformSupport(TestingPlatformSupport::Config())
 {
 }
 
 TestingPlatformSupport::TestingPlatformSupport(const Config& config)
     : m_config(config)
     , m_oldPlatform(Platform::current())
 {
+    ASSERT(m_oldPlatform);
     Platform::setCurrentPlatformForTesting(this);
 }
 
 TestingPlatformSupport::~TestingPlatformSupport()
 {
     Platform::setCurrentPlatformForTesting(m_oldPlatform);
 }
 
 WebDiscardableMemory* TestingPlatformSupport::allocateAndLockDiscardableMemory(size_t bytes)
 {
@@ skipping 146 matching lines @@
 {
     return m_mockWebThread.get();
 }
 
 TestingPlatformMockScheduler* TestingPlatformSupportWithMockScheduler::mockWebScheduler()
 {
     return m_mockWebThread->mockWebScheduler();
 }
 
 } // namespace blink