make DateParser::TimeComposer handle milliseconds properly...

src/dateparser.h

 // Copyright 2008 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 69 matching lines @@
     // Read a string of digits as an unsigned number (cap just below kMaxInt).
     int ReadUnsignedNumber() {
       has_read_number_ = true;
       int n;
       for (n = 0; IsAsciiDigit() && n < kMaxInt / 10 - 1; Next()) {
         n = n * 10 + ch_ - '0';
       }
       return n;
     }
 
+    // Read a string of digits, take the first three or fewer as an unsigned
+    // number of milliseconds, and ignore any digits after the first three.
+    int ReadMilliseconds() {
+      has_read_number_ = true;
+      int n = 0;
+      int power;
+      for (power = 100; IsAsciiDigit(); Next(), power = power / 10) {
+        n = n + power * (ch_ - '0');
+      }
+      return n;
+    }
+
     // Read a word (sequence of chars. >= 'A'), fill the given buffer with a
     // lower-case prefix, and pad any remainder of the buffer with zeroes.
     // Return word length.
     int ReadWord(uint32_t* prefix, int prefix_size) {
       int len;
       for (len = 0; IsAsciiAlphaOrAbove(); Next(), len++) {
         if (len < prefix_size) prefix[len] = AsciiAlphaToLower(ch_);
       }
       for (int i = len; i < prefix_size; i++) prefix[i] = 0;
       return len;
@@ skipping 142 matching lines @@
     int comp_[kSize];
     int index_;
     int named_month_;
   };
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_DATEPARSER_H_