IndexedDB: Add histograms for key type

third_party/WebKit/Source/modules/indexeddb/IDBKey.cpp

 /*
  * Copyright (C) 2011 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
@@ skipping 65 matching lines @@
               memcmp(m_binary->data(), other->m_binary->data(),
                      std::min(m_binary->size(), other->m_binary->size())))
         return result < 0 ? -1 : 1;
       return compareNumbers(m_binary->size(), other->m_binary->size());
     case StringType:
       return codePointCompare(m_string, other->m_string);
     case DateType:
     case NumberType:
       return compareNumbers(m_number, other->m_number);
     case InvalidType:
-    case MinType:
       ASSERT_NOT_REACHED();
       return 0;
   }
 
   ASSERT_NOT_REACHED();
   return 0;
 }
 
 bool IDBKey::isLessThan(const IDBKey* other) const {
   ASSERT(other);
@@ skipping 20 matching lines @@
             [](const Member<IDBKey> a, const Member<IDBKey> b) {
               return a->isLessThan(b);
             });
   const auto end = std::unique(result.begin(), result.end());
   DCHECK_LE(static_cast<size_t>(end - result.begin()), result.size());
   result.resize(end - result.begin());
   return result;
 }
 
 }  // namespace blink