[fuchsia] Make symbols in the Dart VM visible, so they are available to the profiler.

runtime/bin/BUILD.gn

 # Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 import("gypi_contents.gni")
 import("../runtime_args.gni")
 import("../../build/compiled_action.gni")
 
 declare_args() {
   # Controls the kind of core snapshot linked into the standalone VM. Using a
@@ skipping 219 matching lines @@
       "log",
     ]
   }
 }
 
 static_library("libdart_builtin") {
   configs += [
     "..:dart_config",
     "..:dart_maybe_product_config",
   ]
+  if (is_fuchsia) {
+    configs -= [ "//build/config:symbol_visibility_hidden" ]
+  }
   public_configs = [ ":libdart_builtin_config" ]
   deps = [
     ":generate_blink_cc_file",
     ":generate_builtin_cc_file",
     ":generate_cached_patches_cc_file",
     ":generate_html_cc_file",
     ":generate_html_common_cc_file",
     ":generate_indexed_db_cc_file",
     ":generate_io_cc_file",
     ":generate_io_patch_cc_file",
@@ skipping 19 matching lines @@
             ] + builtin_impl_sources_gypi
 }
 
 executable("gen_snapshot") {
   configs += [
     "..:dart_config",
     "..:dart_maybe_product_config",
     "..:dart_precompiler_config",
     "..:dart_use_target_arch_config",
   ]
+  if (is_fuchsia) {
+    configs -= [ "//build/config:symbol_visibility_hidden" ]
+  }
   deps = [
     ":gen_resources_cc",
     ":gen_snapshot_dart_io",
     ":generate_builtin_cc_file",
     ":generate_io_cc_file",
     ":generate_io_patch_cc_file",
     ":libdart_builtin",
     "..:libdart_nosnapshot_with_precompiler",
   ]
 
@@ skipping 48 matching lines @@
 }
 
 # A source set for the implementation of 'dart:io' library
 # (without secure sockets) suitable for linking with gen_snapshot.
 source_set("gen_snapshot_dart_io") {
   configs += [
     "..:dart_config",
     "..:dart_maybe_product_config",
     "..:dart_precompiler_config",
   ]
+  if (is_fuchsia) {
+    configs -= [ "//build/config:symbol_visibility_hidden" ]
+  }
 
   deps = [
     "$dart_zlib_path",
   ]
 
   custom_sources_filter = [
     "*_test.cc",
     "*_test.h",
     "builtin.cc",
     "builtin_common.cc",
@@ skipping 26 matching lines @@
 template("dart_io") {
   extra_sources = []
   if (defined(invoker.extra_sources)) {
     extra_sources += invoker.extra_sources
   }
   source_set(target_name) {
     configs += [
       "..:dart_config",
       "..:dart_maybe_product_config",
     ]
+    if (is_fuchsia) {
+      configs -= [ "//build/config:symbol_visibility_hidden" ]
+    }
     custom_sources_filter = [
       "*_test.cc",
       "*_test.h",
       "builtin.cc",
       "builtin_gen_snapshot.cc",
     ]
     if (!is_mac && !is_ios) {
       # Dart tree uses *_macos.* instead of *_mac.*
       custom_sources_filter += [
         "*_macos.h",
@@ skipping 195 matching lines @@
   }
   extra_sources = []
   if (defined(invoker.extra_sources)) {
     extra_sources += invoker.extra_sources
   }
   executable(target_name) {
     configs += [
                  "..:dart_config",
                  "..:dart_maybe_product_config",
                ] + extra_configs
-
+    if (is_fuchsia) {
+      configs -= [ "//build/config:symbol_visibility_hidden" ]
+    }
     if (defined(is_fuchsia_host) && is_fuchsia_host) {
       # We already have these in the standalone build, but Fuchsia doesn't
       # have them. They are needed for running Fuchsia binaries built for the
       # host.
       if (is_linux) {
         configs += [ "../../build/config/gcc:executable_ldconfig" ]
       } else if (is_mac) {
         configs += [ "../../build/config/mac:mac_dynamic_flags" ]
       }
     }
@@ skipping 228 matching lines @@
 executable("run_vm_tests") {
   if (is_fuchsia || is_fuchsia_host) {
     testonly = true
   }
 
   configs += [
     "..:dart_config",
     "..:dart_maybe_product_config",
     "..:dart_use_target_arch_config",
   ]
+  if (is_fuchsia) {
+    configs -= [ "//build/config:symbol_visibility_hidden" ]
+  }
 
   deps = [
     ":dart_snapshot_cc",
     ":generate_snapshot_test_dat_file",
     ":libdart_builtin",
     ":standalone_dart_io",
     "$dart_zlib_path",
     "..:libdart_jit",
   ]
   include_dirs = [
@@ skipping 75 matching lines @@
   ]
   if (is_linux || is_android) {
     cflags = [ "-fPIC" ]
   }
   if (is_win) {
     libs = [ "dart.lib" ]
     abs_root_out_dir = rebase_path(root_out_dir)
     ldflags = [ "/LIBPATH:$abs_root_out_dir" ]
   }
 }