MIPS: Unbreak gn build, missing source files for MIPS tf.

BUILD.gn

 # Copyright 2014 The Chromium 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): These will need to be user-settable to support standalone V8
 # builds.
 v8_compress_startup_data = "off"
 v8_deprecation_warnings = false
 v8_enable_disassembler = false
 v8_enable_gdbjit = false
@@ skipping 1109 matching lines @@
       "src/mips/lithium-codegen-mips.h",
       "src/mips/lithium-gap-resolver-mips.cc",
       "src/mips/lithium-gap-resolver-mips.h",
       "src/mips/lithium-mips.cc",
       "src/mips/lithium-mips.h",
       "src/mips/macro-assembler-mips.cc",
       "src/mips/macro-assembler-mips.h",
       "src/mips/regexp-macro-assembler-mips.cc",
       "src/mips/regexp-macro-assembler-mips.h",
       "src/mips/simulator-mips.cc",
+      "src/compiler/mips/code-generator-mips.cc",
+      "src/compiler/mips/instruction-codes-mips.h",
+      "src/compiler/mips/instruction-selector-mips.cc",
+      "src/compiler/mips/linkage-mips.cc",
       "src/ic/mips/access-compiler-mips.cc",
       "src/ic/mips/handler-compiler-mips.cc",
       "src/ic/mips/ic-mips.cc",
       "src/ic/mips/ic-compiler-mips.cc",
       "src/ic/mips/stub-cache-mips.cc",
     ]
   } else if (v8_target_arch == "mips64el") {
     sources += [
       "src/mips64/assembler-mips64.cc",
       "src/mips64/assembler-mips64.h",
@@ skipping 291 matching lines @@
     deps = [
       ":v8_base",
       ":v8_nosnapshot",
     ]
   }
 
   direct_dependent_configs = [ ":external_config" ]
 }
 
 }