Remove parts of //cc we aren't using

cc/output/overlay_candidate_validator.h

Index: cc/output/overlay_candidate_validator.h
diff --git a/cc/output/overlay_candidate_validator.h b/cc/output/overlay_candidate_validator.h
index 036eafc4d1f24e437c1fed508f2e68da998c555c..d94f3c0f40cc759299d2aaa6d3dfd2162e7370bc 100644
--- a/cc/output/overlay_candidate_validator.h
+++ b/cc/output/overlay_candidate_validator.h
@@ -7,14 +7,13 @@
 
 #include <vector>
 
-#include "cc/base/cc_export.h"
 #include "cc/output/overlay_candidate.h"
 
 namespace cc {
 
 // This class that can be used to answer questions about possible overlay
 // configurations for a particular output device.
-class CC_EXPORT OverlayCandidateValidator {
+class OverlayCandidateValidator {
  public:
   // A list of possible overlay candidates is presented to this function.
   // The expected result is that those candidates that can be in a separate