Add CORE_EXPORT to freezeV8Object() in V8Binding.

third_party/WebKit/Source/bindings/core/v8/V8Binding.h

Index: third_party/WebKit/Source/bindings/core/v8/V8Binding.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/V8Binding.h b/third_party/WebKit/Source/bindings/core/v8/V8Binding.h
index 193079c35569586ef22902dd8fbaa4b3ba997b78..8d295a59c149851ff5f050937bc8f7be6fef6e4e 100644
--- a/third_party/WebKit/Source/bindings/core/v8/V8Binding.h
+++ b/third_party/WebKit/Source/bindings/core/v8/V8Binding.h
@@ -954,7 +954,7 @@ typedef void (*InstallTemplateFunction)(v8::Isolate*, const DOMWrapperWorld&, v8
 // Freeze a V8 object. The type of the first parameter and the return value is
 // intentionally v8::Value so that this function can wrap toV8().
 // If the argument isn't an object, this will crash.
-v8::Local<v8::Value> freezeV8Object(v8::Local<v8::Value>, v8::Isolate*);
+CORE_EXPORT v8::Local<v8::Value> freezeV8Object(v8::Local<v8::Value>, v8::Isolate*);
 
 } // namespace blink