fuchsia: base_unittests (mostly) compiling

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 539 matching lines @@
       "//testing/gtest:gtest_main",
       "//third_party/pdfium/samples:pdfium_diff",
       "//third_party/tcmalloc:addr2line-pdb",
       "//tools/win/chromeexts:chromeexts",
     ]
 
     if (!(is_component_build && is_debug && target_cpu == "x86")) {
       deps +=
           [ "//chrome/installer/mini_installer:next_version_mini_installer" ]
     }
-  } else if (!is_android && !is_ios) {
+  } else if (!is_android && !is_ios && !is_fuchsia) {
     deps += [ "//breakpad:symupload($host_toolchain)" ]
   }
 
   if (is_chromecast) {
     deps += [ "//chromecast:cast_shell" ]
   }
 
   if (is_mac || is_win) {
     deps += [
       "//third_party/crashpad/crashpad/handler:crashpad_handler",
@@ skipping 495 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" ]
 }