Rename 'UseCounter::observe' to 'UseCounter::count'.

Source/core/page/UseCounter.h

 /*
  * Copyright (C) 2012 Google, Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 116 matching lines @@
         PrefixedUserTiming,
         WindowEvent,
         ContentSecurityPolicyWithBaseElement,
         PrefixedMediaAddKey,
         PrefixedMediaGenerateKeyRequest,
         WebAudioLooping,
         // Add new features above this line. Don't change assigned numbers of each items.
         NumberOfFeatures, // This enum value must be last.
     };
 
-    // "observe" sets the bit for this feature to 1. Repeated calls are ignored.
-    static void observe(Document*, Feature);
-    static void observe(DOMWindow*, Feature);
+    // "count" sets the bit for this feature to 1. Repeated calls are ignored.
+    static void count(Document*, Feature);
+    static void count(DOMWindow*, Feature);
 
-    // "measureDeprecatedFeature" sets the bit for this feature to 1, and sends a deprecation
+    // "countDeprecation" sets the bit for this feature to 1, and sends a deprecation
     // warning to the console. Repeated calls are ignored.
     //
     // Be considerate to developers' consoles: features should only send deprecation warnings
     // when we're actively interested in removing them from the platform.
-    static void measureDeprecatedFeature(DOMWindow*, Feature);
-    static void measureDeprecatedFeature(ScriptExecutionContext*, Feature);
-    static void measureDeprecatedFeature(Document*, Feature);
+    static void countDeprecation(DOMWindow*, Feature);
+    static void countDeprecation(ScriptExecutionContext*, Feature);
+    static void countDeprecation(Document*, Feature);
     String deprecationMessage(Feature);
 
     void didCommitLoad();
 
 private:
-    bool recordObservation(Feature feature)
+    bool recordMeasurement(Feature feature)
     {
         ASSERT(feature != PageDestruction); // PageDestruction is reserved as a scaling factor.
         ASSERT(feature < NumberOfFeatures);
         if (!m_countBits) {
             m_countBits = adoptPtr(new BitVector(NumberOfFeatures));
             m_countBits->clearAll();
         }
 
         if (m_countBits->quickGet(feature))
             return false;
 
         m_countBits->quickSet(feature);
         return true;
     }
 
     void updateMeasurements();
 
     OwnPtr<BitVector> m_countBits;
 };
 
 } // namespace WebCore
 
 #endif // UseCounter_h