Replace ENABLE(ASSERT) with DCHECK_IS_ON().

third_party/WebKit/Source/core/fileapi/File.h

Index: third_party/WebKit/Source/core/fileapi/File.h
diff --git a/third_party/WebKit/Source/core/fileapi/File.h b/third_party/WebKit/Source/core/fileapi/File.h
index 4dc77f63b1a1daf33926318778f9fbd180d2c8c5..481fc1e2400f73df56a1e436d0d3247c78862601 100644
--- a/third_party/WebKit/Source/core/fileapi/File.h
+++ b/third_party/WebKit/Source/core/fileapi/File.h
@@ -216,7 +216,7 @@ class CORE_EXPORT File final : public Blob {
   // If the modification time isn't known, the current time is returned.
   double lastModifiedMS() const;
 
-#if ENABLE(ASSERT)
+#if DCHECK_IS_ON()
   // Instances backed by a file must have an empty file system URL.
   bool hasValidFileSystemURL() const {
     return !hasBackingFile() || m_fileSystemURL.isEmpty();