Make crazy linker work in gn build

build/config/android/rules.gni

 # 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/android/internal_rules.gni")
 import("//tools/grit/grit_rule.gni")
 
 assert(is_android)
 
@@ skipping 751 matching lines @@
     _final_apk_path = "$root_build_dir/apks/" + invoker.apk_name + ".apk"
   }
   _dist_jar_path_list = process_file_template(
       [ _final_apk_path ],
       "$root_build_dir/test.lib.java/{{source_name_part}}.jar"
       )
   _dist_jar_path = _dist_jar_path_list[0]
 
   _native_libs = []
   if (defined(invoker.native_libs)) {
+    _use_chromium_linker = false
+    if (defined(invoker.use_chromium_linker)) {
+      _use_chromium_linker = invoker.use_chromium_linker
+    }
+
+    # TODO(GYP) add "|| profiling_full_stack_frames
+    # Only enable the chromium linker on regular builds, since the
+    # component build crashes on Android 4.4. See b/11379966
+    if (is_component_build || cpu_arch == "arm64" || cpu_arch == "x64") {
+      _use_chromium_linker = false
+    }
+
     _native_libs = invoker.native_libs
     _native_libs_dir = base_path + "/libs"
+
+    if (_use_chromium_linker) {
+      _native_libs += [
+        "$root_build_dir/lib.stripped/libchromium_android_linker.so"
+      ]
+    }
   }
 
   _keystore_path = android_default_keystore_path
   _keystore_name = android_default_keystore_name
   _keystore_password = android_default_keystore_password
 
   if (defined(invoker.keystore_path)) {
     _keystore_path = invoker.keystore_path
     _keystore_name = invoker.keystore_name
     _keystore_password = invoker.keystore_password
@@ skipping 24 matching lines @@
   process_resources("${_template_name}__process_resources") {
     srcjar_path = "${target_gen_dir}/${target_name}.srcjar"
     android_manifest = invoker.android_manifest
     resource_dirs = ["//build/android/ant/empty/res"]
     zip_path = resources_zip_path
     generate_constant_ids = true
   }
   _srcjar_deps += [":${_template_name}__process_resources"]
 
   if (_native_libs != []) {
-    _use_chromium_linker = false
     _enable_chromium_linker_tests = false
+    if (defined(invoker.enable_chromium_linker_tests)) {
+      _enable_chromium_linker_tests = invoker.enable_chromium_linker_tests
+    }
+
     _load_library_from_apk = false
     _native_lib_version_name = ""
 
-
     java_cpp_template("${_template_name}__native_libraries_java") {
       package_name = "org/chromium/base/library_loader"
       sources = [
         "//base/android/java/templates/NativeLibraries.template",
       ]
       inputs = [
         build_config,
       ]
 
       defines = [
         "NATIVE_LIBRARIES_LIST=" +
           "@FileArg($_rebased_build_config:native:java_libraries_list)",
         "NATIVE_LIBRARIES_VERSION_NUMBER=\"$_native_lib_version_name\"",
       ]
       if (_use_chromium_linker) {
-        defines += ["ENABLED_CHROMIUM_LINKER"]
+        defines += ["ENABLE_CHROMIUM_LINKER"]
       }
       if (_load_library_from_apk) {
         defines += ["ENABLE_CHROMIUM_LINKER_LIBRARY_IN_ZIP_FILE"]
       }
       if (_enable_chromium_linker_tests) {
         defines += ["ENABLE_CHROMIUM_LINKER_TESTS"]
       }
     }
     _srcjar_deps += [ ":${_template_name}__native_libraries_java" ]
   }
@@ skipping 355 matching lines @@
 }
 
 # TODO(GYP): implement this.
 template("uiautomator_test") {
   if (defined(invoker.testonly)) { testonly = invoker.testonly }
   assert(target_name != "")
   assert(invoker.deps != [] || true)
   group(target_name) {
   }
 }