prune down content_dll change to just the CONTENT_EXPORTS

content/browser/gpu/gpu_process_host_ui_shim.h

Index: content/browser/gpu/gpu_process_host_ui_shim.h
diff --git a/content/browser/gpu/gpu_process_host_ui_shim.h b/content/browser/gpu/gpu_process_host_ui_shim.h
index 7729fa2f2896d25377e7eecb5dfa93e2be37b100..40115ff0ea36409b752b2374a33678a16db60f36 100644
--- a/content/browser/gpu/gpu_process_host_ui_shim.h
+++ b/content/browser/gpu/gpu_process_host_ui_shim.h
@@ -18,6 +18,7 @@
 #include "base/memory/linked_ptr.h"
 #include "base/memory/ref_counted.h"
 #include "base/threading/non_thread_safe.h"
+#include "content/common/content_export.h"
 #include "content/common/message_router.h"
 
 namespace gfx {
@@ -62,7 +63,7 @@ class GpuProcessHostUIShim
   static void Destroy(int host_id);
 
   // Destroy all remaining GpuProcessHostUIShims.
-  static void DestroyAll();
+  CONTENT_EXPORT static void DestroyAll();
 
   static GpuProcessHostUIShim* FromID(int host_id);