GM: remove enableMissingWarning in favor of verbose flag, and trim output in nonverbose mode

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.
  */
 #ifndef gm_expectations_DEFINED
 #define gm_expectations_DEFINED
 
 #include <stdarg.h>
@@ skipping 207 matching lines @@
      * Return Expectations based on individual image files on disk.
      */
     class IndividualImageExpectationsSource : public ExpectationsSource {
     public:
         /**
          * Create an ExpectationsSource that will return Expectations based on
          * image files found within rootDir.
          *
          * rootDir: directory under which to look for image files
          *          (this string will be copied to storage within this object)
-         * notifyOfMissingFiles: whether to log a message to stderr if an image
-         *                       file cannot be found
          */
-        IndividualImageExpectationsSource(const char *rootDir,
-                                          bool notifyOfMissingFiles) :
-            fRootDir(rootDir), fNotifyOfMissingFiles(notifyOfMissingFiles) {}
+        IndividualImageExpectationsSource(const char *rootDir) : fRootDir(rootDir) {}
 
         Expectations get(const char *testName) SK_OVERRIDE {
             SkString path = make_filename(fRootDir.c_str(), "", testName,
                                           "png");
             SkBitmap referenceBitmap;
             bool decodedReferenceBitmap =
                 SkImageDecoder::DecodeFile(path.c_str(), &referenceBitmap,
                                            SkBitmap::kARGB_8888_Config,
                                            SkImageDecoder::kDecodePixels_Mode,
                                            NULL);
             if (decodedReferenceBitmap) {
                 return Expectations(referenceBitmap);
             } else {
-                if (fNotifyOfMissingFiles) {
-                    gm_fprintf(stderr, "FAILED to read %s\n", path.c_str());
-                }
                 return Expectations();
             }
         }
 
     private:
         const SkString fRootDir;
-        const bool fNotifyOfMissingFiles;
     };
 
     /**
      * Return Expectations based on JSON summary file.
      */
     class JsonExpectationsSource : public ExpectationsSource {
     public:
         /**
          * Create an ExpectationsSource that will return Expectations based on
          * a JSON file.
@@ skipping 98 matching lines @@
             }
             return true;
         }
 
         Json::Value fJsonRoot;
         Json::Value fJsonExpectedResults;
     };
 
 }
 #endif