Add exports needed for glue to build as a component.

webkit/extensions/v8/profiler_extension.h

Index: webkit/extensions/v8/profiler_extension.h
diff --git a/webkit/extensions/v8/profiler_extension.h b/webkit/extensions/v8/profiler_extension.h
index 70324641bdb3adedd6d4458895cdeb3c3e3de43e..8098cb74e5c2739447249d37a71b47ab7121a390 100644
--- a/webkit/extensions/v8/profiler_extension.h
+++ b/webkit/extensions/v8/profiler_extension.h
@@ -6,6 +6,8 @@
 #define WEBKIT_EXTENSIONS_V8_PROFILER_EXTENSION_H_
 #pragma once
 
+#include "webkit/extensions/webkit_extensions_export.h"
+
 namespace v8 {
 class Extension;
 }
@@ -17,7 +19,7 @@ namespace extensions_v8 {
 // name is to distinguish it from the built-in V8 Profiler.
 class ProfilerExtension {
  public:
-  static v8::Extension* Get();
+  WEBKIT_EXTENSIONS_EXPORT static v8::Extension* Get();
 };
 
 }  // namespace extensions_v8