Initial support for emitting unwinding information in perf jitdump.

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.
 
 import("//build/config/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/dcheck_always_on.gni")
 import("//build/config/mips.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 
@@ skipping 1430 matching lines @@
     "src/types.h",
     "src/typing-asm.cc",
     "src/typing-asm.h",
     "src/unicode-cache-inl.h",
     "src/unicode-cache.h",
     "src/unicode-decoder.cc",
     "src/unicode-decoder.h",
     "src/unicode-inl.h",
     "src/unicode.cc",
     "src/unicode.h",
+    "src/unwinding-info.cc",
+    "src/unwinding-info.h",
     "src/uri.cc",
     "src/uri.h",
     "src/utils-inl.h",
     "src/utils.cc",
     "src/utils.h",
     "src/v8.cc",
     "src/v8.h",
     "src/v8memory.h",
     "src/v8threads.cc",
     "src/v8threads.h",
@@ skipping 782 matching lines @@
 
   deps = [
     ":fuzzer_support",
   ]
 
   configs = [ ":internal_config" ]
 }
 
 v8_fuzzer("wasm_asmjs_fuzzer") {
 }