Remove UnusedParam.h

Source/wtf/dtoa/fixed-dtoa.cc

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 13 matching lines @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "config.h"
 
 #include <math.h>
 
 #include "double.h"
 #include "fixed-dtoa.h"
-#include "wtf/UnusedParam.h"
 
 namespace WTF {
 
 namespace double_conversion {
 
     // Represents a 128bit type. This class should be replaced by a native type on
     // platforms that support 128bit integers.
     class UInt128 {
     public:
         UInt128() : high_bits_(0), low_bits_(0) { }
@@ skipping 103 matching lines @@
             char tmp = buffer[i];
             buffer[i] = buffer[j];
             buffer[j] = tmp;
             i++;
             j--;
         }
         *length += number_length;
     }
 
 
-    static void FillDigits64FixedLength(uint64_t number, int requested_length,
+    static void FillDigits64FixedLength(uint64_t number, int,
                                         Vector<char> buffer, int* length) {
-        UNUSED_PARAM(requested_length);
         const uint32_t kTen7 = 10000000;
         // For efficiency cut the number into 3 uint32_t parts, and print those.
         uint32_t part2 = static_cast<uint32_t>(number % kTen7);
         number /= kTen7;
         uint32_t part1 = static_cast<uint32_t>(number % kTen7);
         uint32_t part0 = static_cast<uint32_t>(number / kTen7);
 
         FillDigits32FixedLength(part0, 3, buffer, length);
         FillDigits32FixedLength(part1, 7, buffer, length);
         FillDigits32FixedLength(part2, 7, buffer, length);
@@ skipping 230 matching lines @@
             // The string is empty and the decimal_point thus has no importance. Mimick
             // Gay's dtoa and and set it to -fractional_count.
             *decimal_point = -fractional_count;
         }
         return true;
     }
 
 }  // namespace double_conversion
 
 } // namespace WTF