VM: Replace CheckedHandle with Cast/Handle in some places.

runtime/vm/dart_entry.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/dart_entry.h"
 
 #include "vm/class_finalizer.h"
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
 #include "vm/debugger.h"
@@ skipping 231 matching lines @@
   return InvokeFunction(function, args);
 }
 
 
 ArgumentsDescriptor::ArgumentsDescriptor(const Array& array)
     : array_(array) {
 }
 
 
 intptr_t ArgumentsDescriptor::Count() const {
-  return Smi::CheckedHandle(array_.At(kCountIndex)).Value();
+  return Smi::Cast(Object::Handle(array_.At(kCountIndex))).Value();
 }
 
 
 intptr_t ArgumentsDescriptor::PositionalCount() const {
-  return Smi::CheckedHandle(array_.At(kPositionalCountIndex)).Value();
+  return Smi::Cast(Object::Handle(array_.At(kPositionalCountIndex))).Value();
 }
 
 
 RawString* ArgumentsDescriptor::NameAt(intptr_t index) const {
   const intptr_t offset = kFirstNamedEntryIndex +
                           (index * kNamedEntrySize) +
                           kNameOffset;
   String& result = String::Handle();
   result ^= array_.At(offset);
   return result.raw();
@@ skipping 308 matching lines @@
   const Array& args = Array::Handle(Array::New(kNumArguments));
   args.SetAt(0, map);
   args.SetAt(1, key);
   args.SetAt(2, value);
   const Object& result = Object::Handle(DartEntry::InvokeFunction(function,
                                                                   args));
   return result.raw();
 }
 
 }  // namespace dart