Export Content Mus for Unit Testing

content/renderer/input/input_handler_manager.h

Index: content/renderer/input/input_handler_manager.h
diff --git a/content/renderer/input/input_handler_manager.h b/content/renderer/input/input_handler_manager.h
index c8bfb75262e6d3be82b6afda9e59568086c39140..1bebf9129ff036158a9a2b8852df900427e87015 100644
--- a/content/renderer/input/input_handler_manager.h
+++ b/content/renderer/input/input_handler_manager.h
@@ -8,6 +8,7 @@
 #include "base/containers/scoped_ptr_hash_map.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
+#include "content/common/content_export.h"
 #include "content/common/input/input_event_ack_state.h"
 #include "content/renderer/render_view_impl.h"
 
@@ -37,7 +38,7 @@ struct DidOverscrollParams;
 
 // InputHandlerManager class manages InputHandlerProxy instances for
 // the WebViews in this renderer.
-class InputHandlerManager {
+class CONTENT_EXPORT InputHandlerManager {
  public:
   // |task_runner| is the SingleThreadTaskRunner of the compositor thread. The
   // underlying MessageLoop and supplied |client| and the |renderer_scheduler|