Replace ASSERT and ASSERT_NOT_REACHED with DCHECK and NOTREACHED in core/testing/.

third_party/WebKit/Source/core/testing/Internals.cpp

Index: third_party/WebKit/Source/core/testing/Internals.cpp
diff --git a/third_party/WebKit/Source/core/testing/Internals.cpp b/third_party/WebKit/Source/core/testing/Internals.cpp
index 35e1d0a8497233aed51ed4e54aede63ff8dd12ff..ac589d60c61b03d9f7a850e9d48cac0cc22ec765 100644
--- a/third_party/WebKit/Source/core/testing/Internals.cpp
+++ b/third_party/WebKit/Source/core/testing/Internals.cpp
@@ -812,7 +812,7 @@ String Internals::shadowRootType(const Node* root,
     case ShadowRootType::Closed:
       return String("ClosedShadowRoot");
     default:
-      ASSERT_NOT_REACHED();
+      NOTREACHED();
       return String("Unknown");
   }
 }
@@ -2563,7 +2563,7 @@ static const char* cursorTypeToString(Cursor::Type cursorType) {
       return "Custom";
   }
 
-  ASSERT_NOT_REACHED();
+  NOTREACHED();
   return "UNKNOWN";
 }