[runtime] Implement encodeURI as single runtime function.

src/bignum.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/bignum.h"
 #include "src/utils.h"
 
 namespace v8 {
 namespace internal {
 
@@ skipping 521 matching lines @@
   DCHECK(number > 0);
   int result = 0;
   while (number != 0) {
     number >>= 4;
     result++;
   }
   return result;
 }
 
 
-static char HexCharOfValue(int value) {
-  DCHECK(0 <= value && value <= 16);
-  if (value < 10) return value + '0';
-  return value - 10 + 'A';
-}
-
-
 bool Bignum::ToHexString(char* buffer, int buffer_size) const {
   DCHECK(IsClamped());
   // Each bigit must be printable as separate hex-character.
   DCHECK(kBigitSize % 4 == 0);
   const int kHexCharsPerBigit = kBigitSize / 4;
 
   if (used_digits_ == 0) {
     if (buffer_size < 2) return false;
     buffer[0] = '0';
     buffer[1] = '\0';
@@ skipping 186 matching lines @@
     bigits_[i] = difference & kBigitMask;
     borrow = difference >> (kChunkSize - 1);
   }
   Clamp();
   DCHECK(Bignum::Equal(a, *this));
 }
 
 
 }  // namespace internal
 }  // namespace v8