small misspelling fixes.

src/deoptimizer.cc

 // Copyright 2013 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 2284 matching lines @@
     return base - ((slot_index + 1) * kPointerSize);
   }
 }
 
 
 int FrameDescription::ComputeParametersCount() {
   switch (type_) {
     case StackFrame::JAVA_SCRIPT:
       return function_->shared()->formal_parameter_count();
     case StackFrame::ARGUMENTS_ADAPTOR: {
-      // Last slot contains number of incomming arguments as a smi.
+      // Last slot contains number of incoming arguments as a smi.
       // Can't use GetExpression(0) because it would cause infinite recursion.
       return reinterpret_cast<Smi*>(*GetFrameSlotPointer(0))->value();
     }
     case StackFrame::STUB:
       return -1;  // Minus receiver.
     default:
       UNREACHABLE();
       return 0;
   }
 }
@@ skipping 457 matching lines @@
 
 void DeoptimizedFrameInfo::Iterate(ObjectVisitor* v) {
   v->VisitPointer(BitCast<Object**>(&function_));
   v->VisitPointers(parameters_, parameters_ + parameters_count_);
   v->VisitPointers(expression_stack_, expression_stack_ + expression_count_);
 }
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 } }  // namespace v8::internal