Simplify //mojo/public/c/system targets

sky/engine/platform/BUILD.gn

 # 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/ui.gni")
 import("//sky/engine/build/scripts/scripts.gni")
 import("//sky/engine/config.gni")
 
 # Most targets in this file are private actions so use that as the default.
 visibility = [ ":*" ]
@@ skipping 66 matching lines @@
 
 group("make_platform_generated") {
   visibility += [ ":*" ]
   deps = [
     ":color_data",
     ":font_family_names",
     ":runtime_enabled_features",
   ]
 }
 
-component("platform") {
+source_set("platform") {
   visibility += [ "//sky/*" ]
 
-  output_name = "sky_platform"
-
   sources = [
     "animation/AnimationUtilities.h",
     "animation/AnimationValue.h",
     "animation/KeyframeValueList.cpp",
     "animation/KeyframeValueList.h",
     "animation/TimingFunction.cpp",
     "animation/TimingFunction.h",
     "animation/UnitBezier.h",
     "AsyncMethodRunner.h",
     "CalculationValue.h",
@@ skipping 535 matching lines @@
 
   include_dirs = [ "$root_build_dir" ]
 
   deps = [
     ":make_platform_generated",
     "//base:base",
     "//gpu/command_buffer/client:gles2_c_lib",
     "//mojo/application",
     "//mojo/common",
     "//mojo/environment:chromium",
-    "//mojo/public/c/system:for_shared_library",
+    "//mojo/public/c/system",
     "//mojo/public/cpp/bindings",
     "//mojo/public/cpp/system",
     "//mojo/public/cpp/utility",
     "//mojo/services/public/interfaces/network",
     "//skia",
     "//sky/engine/wtf",
     "//third_party/harfbuzz-ng",
     "//third_party/iccjpeg",
     "//third_party/icu",
     "//third_party/libpng",
@@ skipping 91 matching lines @@
     "//base/allocator",
     "//base/test:test_support",
     "//skia",
     "//testing/gmock",
     "//testing/gtest",
     "//sky/engine/wtf",
     "//sky/engine/wtf:test_support",
     "//url",
   ]
 
+  # TODO(abarth): This is a lie - this test is not embedded in an environment
+  # that injects the system thunks, so system calls don't actually work. This
+  # just tricks the linker into thinking that an implementation of these calls
+  # will be injected at runtime so the link succeeds.
+  deps += [ "//mojo/public/platform/native:system" ]
+
   defines = [ "INSIDE_BLINK" ]
 
   include_dirs = [ "$root_build_dir" ]
 }
 
 if (cpu_arch == "arm") {
   source_set("sky_arm_neon") {
     sources = [
       "graphics/cpu/arm/WebGLImageConversionNEON.h",
       "graphics/cpu/arm/filters/FEBlendNEON.h",
       "graphics/cpu/arm/filters/FECompositeArithmeticNEON.h",
       "graphics/cpu/arm/filters/FEGaussianBlurNEON.h",
       "graphics/cpu/arm/filters/NEONHelpers.h",
     ]
     # The *NEON.cpp files fail to compile when -mthumb is passed. Force
     # them to build in ARM mode.
     # See https://bugs.webkit.org/show_bug.cgi?id=62916.
     # TODO(GYP)
     #'cflags': ['-marm'],
     #    'conditions': [
     #      ['OS=="android"', {
     #        'cflags!': ['-mthumb'],
     #      }],
     #    ],
   }
 }