Fix MIPS build: use stubbed-out TF implementation

test/cctest/compiler/test-scheduler.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/common-operator.h"
 #include "src/compiler/generic-node-inl.h"
 #include "src/compiler/generic-node.h"
@@ skipping 1677 matching lines @@
   PrintSchedule(schedule);
 
   CHECK_EQ(19, GetScheduledNodeCount(schedule));
 
   // Make sure the integer-only add gets hoisted to a different block that the
   // JSAdd.
   CHECK(schedule->block(n19) != schedule->block(n20));
 }
 
 
+#if V8_TURBOFAN_TARGET
+
 // So we can get a real JS function.
 static Handle<JSFunction> Compile(const char* source) {
   Isolate* isolate = CcTest::i_isolate();
   Handle<String> source_code = isolate->factory()
                                    ->NewStringFromUtf8(CStrVector(source))
                                    .ToHandleChecked();
   Handle<SharedFunctionInfo> shared_function = Compiler::CompileScript(
       source_code, Handle<String>(), 0, 0, false,
       Handle<Context>(isolate->native_context()), NULL, NULL,
       v8::ScriptCompiler::kNoCompileOptions, NOT_NATIVES_CODE);
@@ skipping 111 matching lines @@
   // The lazy deopt block is deferred.
   CHECK(deopt_block->deferred_);
   CHECK(!call_block->deferred_);
   CHECK(!cont_block->deferred_);
   // The lazy deopt block contains framestate + bailout (and nothing else).
   CHECK_EQ(deoptimization_node, deopt_block->control_input_);
   CHECK_EQ(2, static_cast<int>(deopt_block->nodes_.size()));
   CHECK_EQ(lazy_deopt_node, deopt_block->nodes_[0]);
   CHECK_EQ(state_node, deopt_block->nodes_[1]);
 }
+
+#endif