mac: Add _EXPORT macros, content/.

content/browser/find_pasteboard.h

Index: content/browser/find_pasteboard.h
diff --git a/content/browser/find_pasteboard.h b/content/browser/find_pasteboard.h
index 9369ba65a856f8c21228069662a3d3f652a47201..35a0cd5571c12032fffc7afe2bc7fd092299c550 100644
--- a/content/browser/find_pasteboard.h
+++ b/content/browser/find_pasteboard.h
@@ -13,8 +13,9 @@
 #import <Cocoa/Cocoa.h>
 
 #include "base/memory/scoped_nsobject.h"
+#include "content/common/content_export.h"
 
-extern NSString* kFindPasteboardChangedNotification;
+CONTENT_EXPORT extern NSString* kFindPasteboardChangedNotification;
 
 // Manages the find pasteboard. Use this to copy text to the find pasteboard,
 // to get the text currently on the find pasteboard, and to receive
@@ -53,6 +54,6 @@ extern NSString* kFindPasteboardChangedNotification;
 #endif  // __OBJC__
 
 // Also provide a c++ interface
-string16 GetFindPboardText();
+CONTENT_EXPORT string16 GetFindPboardText();
 
 #endif  // CONTENT_BROWSER_FIND_PASTEBOARD_H_