more content exports needed for unit_tests and browser_tests.

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 d63a1eda77f22179c824caaac596704375626d6c..dff4d761e5aae1a3bfe75d297f8d53ef16f0349f 100644
--- a/content/browser/tab_contents/navigation_controller.h
+++ b/content/browser/tab_contents/navigation_controller.h
@@ -311,11 +311,9 @@ class CONTENT_EXPORT NavigationController {
   static void DisablePromptOnRepost();
 
   // Maximum number of entries before we start removing entries from the front.
-#ifdef UNIT_TEST
-  static void set_max_entry_count(size_t max_entry_count) {
+  static void set_max_entry_count_for_testing(size_t max_entry_count) {
     max_entry_count_ = max_entry_count;
   }
-#endif
   static size_t max_entry_count() { return max_entry_count_; }
 
   // Cancels a repost that brought up a warning.