diff -up chromium-62.0.3202.62/third_party/WebKit/Source/platform/blob/BlobData.cpp.nonullptr chromium-62.0.3202.62/third_party/WebKit/Source/platform/blob/BlobData.cpp
--- chromium-62.0.3202.62/third_party/WebKit/Source/platform/blob/BlobData.cpp.nonullptr	2017-10-18 10:10:14.216353575 -0400
+++ chromium-62.0.3202.62/third_party/WebKit/Source/platform/blob/BlobData.cpp	2017-10-18 10:10:23.657170980 -0400
@@ -295,7 +295,7 @@ BlobDataHandle::BlobDataHandle(std::uniq
 
     size_t current_memory_population = 0;
     Vector<DataElementPtr> elements;
-    const DataElementPtr null_element = nullptr;
+    const DataElementPtr null_element;
     BlobBytesProvider* last_bytes_provider = nullptr;
     RefPtr<WebTaskRunner> file_runner = Platform::Current()->FileTaskRunner();