Fix a bunch of spelling mistakes :\

src/builtins-arm.cc

 // Copyright 2006-2008 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 547 matching lines @@
   // -----------------------------------
 
   Label invoke, dont_adapt_arguments;
 
   Label enough, too_few;
   __ cmp(r0, Operand(r2));
   __ b(lt, &too_few);
   __ cmp(r2, Operand(SharedFunctionInfo::kDontAdaptArgumentsSentinel));
   __ b(eq, &dont_adapt_arguments);
 
-  {  // Enough parameters: actual >= excpected
+  {  // Enough parameters: actual >= expected
     __ bind(&enough);
     EnterArgumentsAdaptorFrame(masm);
 
     // Calculate copy start address into r0 and copy end address into r2.
     // r0: actual number of arguments as a smi
     // r1: function
     // r2: expected number of arguments
     // r3: code entry to call
     __ add(r0, fp, Operand(r0, LSL, kPointerSizeLog2 - kSmiTagSize));
     // adjust for return address and receiver
@@ skipping 70 matching lines @@
   // Dont adapt arguments.
   // -------------------------------------------
   __ bind(&dont_adapt_arguments);
   __ mov(pc, r3);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal