Remove deprecated API usage from compiler cctests.

test/cctest/compiler/test-loop-assignment-analysis.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.
 
+// TODO(jochen): Remove this after the setting is turned on globally.
+#define V8_IMMINENT_DEPRECATION_WARNINGS
+
 #include "src/compiler/ast-loop-assignment-analyzer.h"
 #include "src/parser.h"
 #include "src/rewriter.h"
 #include "src/scopes.h"
 #include "test/cctest/cctest.h"
 
 using namespace v8::internal;
 using namespace v8::internal::compiler;
 
 namespace {
@@ skipping 271 matching lines @@
       "    while (1) z++;"
       "  }"
       "}"
       "w;");
 
   f.CheckLoopAssignedCount(1, "x");
   f.CheckLoopAssignedCount(3, "y");
   f.CheckLoopAssignedCount(5, "z");
   f.CheckLoopAssignedCount(0, "w");
 }