Revert of Patch to try dump-on-DCHECK.

third_party/WebKit/Source/wtf/Assertions.h

Index: third_party/WebKit/Source/wtf/Assertions.h
diff --git a/third_party/WebKit/Source/wtf/Assertions.h b/third_party/WebKit/Source/wtf/Assertions.h
index 6e770546cc2448635c45e7b24b09bd5cf7639053..3962562ffd6f36121f90cd2ff3a97a00b36e33f2 100644
--- a/third_party/WebKit/Source/wtf/Assertions.h
+++ b/third_party/WebKit/Source/wtf/Assertions.h
@@ -51,14 +51,12 @@
 // Users must test "#if ENABLE(ASSERT)", which helps ensure that code
 // testing this macro has included this header.
 #ifndef ENABLE_ASSERT
-#if DCHECK_IS_ON() && !defined(DCHECK_IS_DUMP_WITHOUT_CRASH)
-/* ASSERT* will currently crash the process if enabled, so which is not
-   the desired behaviour if DCHECK_IS_DUMP_WITHOUT_CRASH. */
-#define ENABLE_ASSERT 1
-#else
+#if defined(NDEBUG) && !defined(DCHECK_ALWAYS_ON)
 /* Disable ASSERT* macros in release mode by default. */
 #define ENABLE_ASSERT 0
-#endif /* DCHECK_IS_ON() */
+#else
+#define ENABLE_ASSERT 1
+#endif /* defined(NDEBUG) && !defined(DCHECK_ALWAYS_ON) */
 #endif
 
 #ifndef ASSERT_MSG_DISABLED