Implement Dump-on-DCHECK (via a new LogSeverity).

third_party/WebKit/Source/wtf/AssertionsTest.cpp

 // Copyright 2015 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 "wtf/Assertions.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "wtf/text/StringBuilder.h"
 #include <stdio.h>
 
 namespace WTF {
 
 TEST(AssertionsTest, Assertions) {
   ASSERT(true);
-#if DCHECK_IS_ON()
+#if DCHECK_IS_ON() && !defined(DCHECK_IS_DUMP_WITHOUT_CRASH)
   EXPECT_DEATH_IF_SUPPORTED(ASSERT(false), "");
   EXPECT_DEATH_IF_SUPPORTED(ASSERT_NOT_REACHED(), "");
+  EXPECT_DEATH_IF_SUPPORTED(DCHECK_AT(false, __FILE__, __LINE__), "");
+#else
+  ASSERT(false);
+  ASSERT_NOT_REACHED();
+  DCHECK_AT(false, __FILE__, __LINE__);
 #endif
 
   RELEASE_ASSERT(true);
   EXPECT_DEATH_IF_SUPPORTED(RELEASE_ASSERT(false), "");
 
   SECURITY_DCHECK(true);
 #if ENABLE(SECURITY_ASSERT)
   EXPECT_DEATH_IF_SUPPORTED(SECURITY_DCHECK(false), "");
+#else
+  SECURITY_DCHECK(false);
 #endif
 
   SECURITY_CHECK(true);
   EXPECT_DEATH_IF_SUPPORTED(SECURITY_CHECK(false), "");
 
   EXPECT_DEATH_IF_SUPPORTED(CRASH(), "");
   EXPECT_DEATH_IF_SUPPORTED(IMMEDIATE_CRASH(), "");
 };
 
 #if !LOG_DISABLED
@@ skipping 27 matching lines @@
       "  ( c\n"
       "    ( d -1 hello )\n"
       "  )\n"
       "  a2 0.5\n"
       ")\n",
       gBuilder.toString());
 };
 #endif  // !LOG_DISABLED
 
 }  // namespace WTF