[turbofan] cleanup register allocator interface a little

test/cctest/compiler/test-codegen-deopt.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 #include "test/cctest/cctest.h"
 
 #include "src/compiler/code-generator.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/graph.h"
@@ skipping 60 matching lines @@
     InstructionSelector selector(scope_->main_zone(), linkage, code, schedule,
                                  &source_positions);
     selector.SelectInstructions();
 
     if (FLAG_trace_turbo) {
       os << "----- Instruction sequence before register allocation -----\n"
          << *code;
     }
 
     Frame frame;
-    RegisterAllocator allocator(scope_->main_zone(), &frame, &info, code);
+    RegisterAllocator allocator(scope_->main_zone(), &frame, code);
     CHECK(allocator.Allocate());
 
     if (FLAG_trace_turbo) {
       os << "----- Instruction sequence after register allocation -----\n"
          << *code;
     }
 
     compiler::CodeGenerator generator(&frame, linkage, code, &info);
     result_code = generator.GenerateCode();
 
@@ skipping 216 matching lines @@
   Handle<Object> result;
   bool has_pending_exception =
       !Execution::Call(isolate, t.function,
                        isolate->factory()->undefined_value(), 0, NULL,
                        false).ToHandle(&result);
   CHECK(!has_pending_exception);
   CHECK(result->SameValue(Smi::FromInt(42)));
 }
 
 #endif