replace config() with colorType()

gm/gm_expectations.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  * TODO(epoger): Combine this with tools/image_expectations.h, or eliminate one of the two.
  */
 #ifndef gm_expectations_DEFINED
 #define gm_expectations_DEFINED
@@ skipping 140 matching lines @@
          */
         bool match(GmResultDigest resultDigest) const;
 
         /**
          * If this Expectation is based on a single SkBitmap, return a
          * pointer to that SkBitmap. Otherwise (if the Expectation is
          * empty, or if it was based on a list of checksums rather
          * than a single bitmap), returns NULL.
          */
         const SkBitmap *asBitmap() const {
-            return (SkBitmap::kNo_Config == fBitmap.config()) ? NULL : &fBitmap;
+            return (kUnknown_SkColorType == fBitmap.colorType()) ? NULL : &fBitmap;
         }
 
 #ifdef SK_BUILD_JSON_WRITER
         /**
          * Return a JSON representation of the expectations.
          */
         Json::Value asJsonValue() const;
 #endif
 
     private:
@@ skipping 62 matching lines @@
          */
         static bool Parse(const char *jsonPath, Json::Value *jsonRoot);
 
         Json::Value fJsonRoot;
         Json::Value fJsonExpectedResults;
     };
 #endif // SK_BUILD_JSON_WRITER
 
 }
 #endif