diff -up chromium-64.0.3282.119/third_party/WebKit/Source/platform/graphics/gpu/SharedGpuContext.h.gcc7 chromium-64.0.3282.119/third_party/WebKit/Source/platform/graphics/gpu/SharedGpuContext.h
--- chromium-64.0.3282.119/third_party/WebKit/Source/platform/graphics/gpu/SharedGpuContext.h.gcc7	2018-01-25 11:15:00.291466617 -0500
+++ chromium-64.0.3282.119/third_party/WebKit/Source/platform/graphics/gpu/SharedGpuContext.h	2018-01-25 11:16:36.159320291 -0500
@@ -10,6 +10,7 @@
 #include "platform/wtf/Functional.h"
 #include "platform/wtf/ThreadSpecific.h"
 
+#include <functional>
 #include <memory>
 
 namespace blink {