Heap::AllocateStringFromOneByte() and major part of its callers handlified.

test/cctest/test-alloc.cc

 // Copyright 2012 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 115 matching lines @@
       factory->NewFunction(factory->function_string(), factory->null_value());
   // Force the creation of an initial map and set the code to
   // something empty.
   factory->NewJSObject(function);
   function->ReplaceCode(CcTest::i_isolate()->builtins()->builtin(
       Builtins::kEmptyFunction));
   // Patch the map to have an accessor for "get".
   Handle<Map> map(function->initial_map());
   Handle<DescriptorArray> instance_descriptors(map->instance_descriptors());
   Handle<Foreign> foreign = factory->NewForeign(&kDescriptor);
-  Handle<String> name =
-      factory->NewStringFromAscii(Vector<const char>("get", 3));
+  Handle<String> name = factory->NewStringFromStaticAscii("get");
   ASSERT(instance_descriptors->IsEmpty());
 
   Map::EnsureDescriptorSlack(map, 1);
 
   CallbacksDescriptor d(name,
                         foreign,
                         static_cast<PropertyAttributes>(0));
   map->AppendDescriptor(&d);
 
   // Add the Foo constructor the global object.
@@ skipping 69 matching lines @@
       if (index < blocks.length() - 1) {
         blocks[index] = blocks.RemoveLast();
       } else {
         blocks.RemoveLast();
       }
     }
   }
 
   code_range.TearDown();
 }