Build addr2line-pdb from tcmalloc for use in memory-infra symbolization

BUILD.gn

 # Copyright (c) 2013 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.
 
 # This is the root build file for GN. GN will start processing by loading this
 # file, and recursively load all dependencies until all dependencies are either
 # resolved or known not to exist (which will cause the build to fail). So if
 # you add a new build file, there must be some path of dependencies from this
 # file to your new one or GN won't know about it.
 
@@ skipping 655 matching lines @@
       "//components/wifi:wifi_test",
       "//net:quic_client",
       "//net:quic_server",
       "//sandbox/win:pocdll",
       "//sandbox/win:sandbox_poc",
       "//sandbox/win:sbox_integration_tests",
       "//sandbox/win:sbox_unittests",
       "//sandbox/win:sbox_validation_tests",
       "//testing/gtest:gtest_main",
       "//third_party/pdfium/samples:pdfium_diff",
+      "//third_party/tcmalloc:addr2line-pdb",

[erikchen, 2017/03/01 22:42:51]

gyp is deprecated, maybe move this to gn_only?

[awong, 2017/03/01 22:57:00]

Done.

       "//tools/win/chromeexts:chromeexts",
     ]
     deps -= [
       "//crypto:crypto_unittests",  # TODO(GYP)
       "//net:net_unittests",  # TODO(GYP)
     ]
 
     if (!(is_component_build && is_debug && target_cpu == "x86")) {
       deps +=
           [ "//chrome/installer/mini_installer:next_version_mini_installer" ]
@@ skipping 422 matching lines @@
   assert(target_name != "")  # Mark as used.
   sources = invoker.actual_sources
   assert(
       sources == invoker.actual_sources,
       "Do not use a platform name in your output directory (found \"$root_build_dir\"). http://crbug.com/548283")
 }
 
 assert_valid_out_dir("_unused") {
   actual_sources = [ "$root_build_dir/foo" ]
 }