prune down content_dll change to just the CONTENT_EXPORTS

content/browser/tab_contents/navigation_controller.h

Index: content/browser/tab_contents/navigation_controller.h
diff --git a/content/browser/tab_contents/navigation_controller.h b/content/browser/tab_contents/navigation_controller.h
index 62aa198c83eb18ad21caa7fd999ba073cdd0e1b8..d63a1eda77f22179c824caaac596704375626d6c 100644
--- a/content/browser/tab_contents/navigation_controller.h
+++ b/content/browser/tab_contents/navigation_controller.h
@@ -15,6 +15,7 @@
 #include "base/time.h"
 #include "googleurl/src/gurl.h"
 #include "content/browser/ssl/ssl_manager.h"
+#include "content/common/content_export.h"
 #include "content/common/navigation_types.h"
 #include "content/common/page_transition_types.h"
 
@@ -34,7 +35,7 @@ struct LoadCommittedDetails;
 //
 // The NavigationController also owns all TabContents for the tab. This is to
 // make sure that we have at most one TabContents instance per type.
-class NavigationController {
+class CONTENT_EXPORT NavigationController {
  public:
 
   enum ReloadType {