Replace ASSERT and ASSERT_NOT_REACHED in core/style/

third_party/WebKit/Source/core/style/GridPosition.h

Index: third_party/WebKit/Source/core/style/GridPosition.h
diff --git a/third_party/WebKit/Source/core/style/GridPosition.h b/third_party/WebKit/Source/core/style/GridPosition.h
index 3de9338e8a9787ed57c46912d55e77b878f95287..d072f14da650529bbd6ccae35dbe9d8bde0f41b9 100644
--- a/third_party/WebKit/Source/core/style/GridPosition.h
+++ b/third_party/WebKit/Source/core/style/GridPosition.h
@@ -82,18 +82,18 @@ class GridPosition {
   }
 
   int integerPosition() const {
-    ASSERT(type() == ExplicitPosition);
+    DCHECK_EQ(type(), ExplicitPosition);
     return m_integerPosition;
   }
 
   AtomicString namedGridLine() const {
-    ASSERT(type() == ExplicitPosition || type() == SpanPosition ||
+    DCHECK(type() == ExplicitPosition || type() == SpanPosition ||
            type() == NamedGridAreaPosition);
     return m_namedGridLine;
   }
 
   int spanPosition() const {
-    ASSERT(type() == SpanPosition);
+    DCHECK_EQ(type(), SpanPosition);
     return m_integerPosition;
   }