Scanner / Unicode decoding: use size_t instead of unsigned.

src/factory.cc

 // Copyright 2014 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/factory.h"
 
 #include "src/allocation-site-scopes.h"
 #include "src/base/bits.h"
 #include "src/conversions.h"
 #include "src/isolate-inl.h"
@@ skipping 222 matching lines @@
     // If the string is ASCII, we do not need to convert the characters
     // since UTF8 is backwards compatible with ASCII.
     return NewStringFromOneByte(Vector<const uint8_t>::cast(string), pretenure);
   }
 
   // Non-ASCII and we need to decode.
   Access<UnicodeCache::Utf8Decoder>
       decoder(isolate()->unicode_cache()->utf8_decoder());
   decoder->Reset(string.start() + non_ascii_start,
                  length - non_ascii_start);
-  int utf16_length = decoder->Utf16Length();
+  int utf16_length = static_cast<int>(decoder->Utf16Length());
   DCHECK(utf16_length > 0);
   // Allocate string.
   Handle<SeqTwoByteString> result;
   ASSIGN_RETURN_ON_EXCEPTION(
       isolate(), result,
       NewRawTwoByteString(non_ascii_start + utf16_length, pretenure),
       String);
   // Copy ASCII portion.
   uint16_t* data = result->GetChars();
   const char* ascii_data = string.start();
@@ skipping 2261 matching lines @@
   return Handle<Object>::null();
 }
 
 
 Handle<Object> Factory::ToBoolean(bool value) {
   return value ? true_value() : false_value();
 }
 
 
 } }  // namespace v8::internal