Pull ICU, rename component build GN variables.

tools/gn/functions_target_unittest.cc

 // 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.
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "tools/gn/scheduler.h"
 #include "tools/gn/scope.h"
 #include "tools/gn/test_with_scope.h"
 
 
 // Checks that we find unused identifiers in targets.
 TEST(FunctionsTarget, CheckUnused) {
   Scheduler scheduler;
   TestWithScope setup;
 
   // The target generator needs a place to put the targets or it will fail.
   Scope::ItemVector item_collector;
   setup.scope()->set_item_collector(&item_collector);
 
   // Test a good one first.
   TestParseInput good_input(
       "source_set(\"foo\") {\n"
       "}\n");
   ASSERT_FALSE(good_input.has_error());
   Err err;
   good_input.parsed()->Execute(setup.scope(), &err);
   ASSERT_FALSE(err.has_error()) << err.message();
 
-  // Test a source set (this covers everything but component) with an unused
-  // variable.
+  // Test a source set with an unused variable.
   TestParseInput source_set_input(
       "source_set(\"foo\") {\n"
       "  unused = 5\n"
       "}\n");
   ASSERT_FALSE(source_set_input.has_error());
   err = Err();
   source_set_input.parsed()->Execute(setup.scope(), &err);
   ASSERT_TRUE(err.has_error());
-
-  // Test a component, which is a different code path.
-  TestParseInput component_input(
-      "component_mode = \"static_library\"\n"
-      "component(\"bar\") {\n"
-      "  unused = 5\n"
-      "}\n");
-  ASSERT_FALSE(component_input.has_error());
-  err = Err();
-  component_input.parsed()->Execute(setup.scope(), &err);
-  ASSERT_TRUE(err.has_error()) << err.message();
 }