More spelling changes.

src/json-parser.h

Index: src/json-parser.h
===================================================================
--- src/json-parser.h	(revision 10402)
+++ src/json-parser.h	(working copy)
@@ -130,7 +130,7 @@
   // An object literal is a squiggly-braced and comma separated sequence
   // (possibly empty) of key/value pairs, where the key is a JSON string
   // literal, the value is a JSON value, and the two are separated by a colon.
-  // A JSON array dosn't allow numbers and identifiers as keys, like a
+  // A JSON array doesn't allow numbers and identifiers as keys, like a
   // JavaScript array.
   Handle<Object> ParseJsonObject();
 
@@ -177,7 +177,7 @@
 
   // Set initial position right before the string.
   position_ = -1;
-  // Advance to the first character (posibly EOS)
+  // Advance to the first character (possibly EOS)
   AdvanceSkipWhitespace();
   Handle<Object> result = ParseJsonValue();
   if (result.is_null() || c0_ != kEndOfString) {