Default components to static libraries in GN build

base/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.
 
 # HOW TO WRITE CONDITIONALS IN THIS FILE
 # ======================================
 #
 # In many other places, one would write a conditional that expresses all the
 # cases when a source file is used or unused, and then either add or subtract
 # it from the sources list in that case
@@ skipping 106 matching lines @@
 # few static initializers floating around means that dead code stripping
 # still leaves a lot of code behind that isn't always used. For example, this
 # saves more than 40K for a smaller target like chrome_elf.
 #
 # Use static libraries for the helper stuff as well like //base/debug since
 # those things refer back to base code, which will force base compilation units
 # to be linked in where they wouldn't have otherwise. This does not include
 # test code (test support and anything in the test directory) which should use
 # source_set as is recommended for GN targets).
 component("base") {
-  # TODO(phosek) bug 570839: If field_trial.cc is in a static library,
-  # hacl_helper_nonsfi doesn't link properly on Linux in debug builds. The
-  # reasons for this seem to involve obscure toolchain bugs. This should be
-  # fixed and this target should always be a static_library in the
-  # non-component case.
-  component_never_use_source_set = !is_nacl_nonsfi
+  if (is_nacl_nonsfi) {
+    # TODO(phosek) bug 570839: If field_trial.cc is in a static library,
+    # nacl_helper_nonsfi doesn't link properly on Linux in debug builds. The
+    # reasons for this seem to involve obscure toolchain bugs. This should be
+    # fixed and this target should always be a static_library in the
+    # non-component case.
+    static_component_type = "source_set"
+  }
 
   sources = [
     "allocator/allocator_check.cc",
     "allocator/allocator_check.h",
     "allocator/allocator_extension.cc",
     "allocator/allocator_extension.h",
     "android/animation_frame_time_histogram.cc",
     "android/animation_frame_time_histogram.h",
     "android/apk_assets.cc",
     "android/apk_assets.h",
@@ skipping 2246 matching lines @@
 
   # GYP: //base.gyp:base_java_unittest_support
   android_library("base_java_unittest_support") {
     deps = [
       ":base_java",
     ]
     java_files =
         [ "test/android/java/src/org/chromium/base/ContentUriTestUtils.java" ]
   }
 }