Add basic support for Latin1 to the API.

src/v8-counters.h

 // Copyright 2012 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 234 matching lines @@
   SC(fast_new_closure_try_optimized, V8.FastNewClosureTryOptimized)   \
   SC(fast_new_closure_install_optimized, V8.FastNewClosureInstallOptimized) \
   SC(string_add_runtime, V8.StringAddRuntime)                         \
   SC(string_add_native, V8.StringAddNative)                           \
   SC(string_add_runtime_ext_to_ascii, V8.StringAddRuntimeExtToAscii)  \
   SC(sub_string_runtime, V8.SubStringRuntime)                         \
   SC(sub_string_native, V8.SubStringNative)                           \
   SC(string_add_make_two_char, V8.StringAddMakeTwoChar)               \
   SC(string_compare_native, V8.StringCompareNative)                   \
   SC(string_compare_runtime, V8.StringCompareRuntime)                 \
+  SC(string_length_utf8, V8.StringLengthUtf8)                         \
+  SC(string_length_ascii, V8.StringLengthAScii)                       \
+  SC(string_length_latin1, V8.StringLengthLatin1)                     \
+  SC(string_length_utf16, V8.StringLengthUtf16)                       \
   SC(regexp_entry_runtime, V8.RegExpEntryRuntime)                     \
   SC(regexp_entry_native, V8.RegExpEntryNative)                       \
   SC(number_to_string_native, V8.NumberToStringNative)                \
   SC(number_to_string_runtime, V8.NumberToStringRuntime)              \
   SC(math_acos, V8.MathAcos)                                          \
   SC(math_asin, V8.MathAsin)                                          \
   SC(math_atan, V8.MathAtan)                                          \
   SC(math_atan2, V8.MathAtan2)                                        \
   SC(math_ceil, V8.MathCeil)                                          \
   SC(math_cos, V8.MathCos)                                            \
@@ skipping 171 matching lines @@
   // Sliding state window counters.
   StatsCounter state_counters_[kSlidingStateWindowCounterCount];
   friend class Isolate;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(Counters);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_V8_COUNTERS_H_