Fix BUILD.gn files and add presubmit step

test/unittests/BUILD.gn

 # Copyright 2016 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.
 
 import("../../gni/v8.gni")
 
 v8_executable("unittests") {
   testonly = true
 
   sources = [
@@ skipping 36 matching lines @@
     "compiler/instruction-selector-unittest.h",
     "compiler/instruction-sequence-unittest.cc",
     "compiler/instruction-sequence-unittest.h",
     "compiler/int64-lowering-unittest.cc",
     "compiler/js-builtin-reducer-unittest.cc",
     "compiler/js-create-lowering-unittest.cc",
     "compiler/js-intrinsic-lowering-unittest.cc",
     "compiler/js-operator-unittest.cc",
     "compiler/js-typed-lowering-unittest.cc",
     "compiler/linkage-tail-call-unittest.cc",
+    "compiler/live-range-builder.h",
     "compiler/live-range-unittest.cc",
     "compiler/liveness-analyzer-unittest.cc",
     "compiler/load-elimination-unittest.cc",
     "compiler/loop-peeling-unittest.cc",
     "compiler/machine-operator-reducer-unittest.cc",
     "compiler/machine-operator-unittest.cc",
     "compiler/move-optimizer-unittest.cc",
     "compiler/node-cache-unittest.cc",
     "compiler/node-matchers-unittest.cc",
     "compiler/node-properties-unittest.cc",
@@ skipping 26 matching lines @@
     "heap/slot-set-unittest.cc",
     "interpreter/bytecode-array-builder-unittest.cc",
     "interpreter/bytecode-array-iterator-unittest.cc",
     "interpreter/bytecode-array-writer-unittest.cc",
     "interpreter/bytecode-dead-code-optimizer-unittest.cc",
     "interpreter/bytecode-decoder-unittest.cc",
     "interpreter/bytecode-peephole-optimizer-unittest.cc",
     "interpreter/bytecode-pipeline-unittest.cc",
     "interpreter/bytecode-register-allocator-unittest.cc",
     "interpreter/bytecode-register-optimizer-unittest.cc",
+    "interpreter/bytecode-utils.h",
     "interpreter/bytecodes-unittest.cc",
     "interpreter/constant-array-builder-unittest.cc",
     "interpreter/interpreter-assembler-unittest.cc",
     "interpreter/interpreter-assembler-unittest.h",
     "libplatform/default-platform-unittest.cc",
     "libplatform/task-queue-unittest.cc",
     "libplatform/worker-thread-unittest.cc",
     "locked-queue-unittest.cc",
     "register-configuration-unittest.cc",
     "run-all-unittests.cc",
@@ skipping 65 matching lines @@
 
     # Suppress warnings about importing locally defined symbols.
     if (is_component_build) {
       ldflags = [
         "/ignore:4049",
         "/ignore:4217",
       ]
     }
   }
 }