First pass on blink compiling for GN build

Source/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("//third_party/WebKit/Source/build/scripts/scripts.gni")
 import("//third_party/WebKit/Source/config.gni")
 
 platform_gypi = exec_script(
     "//build/gypi_to_gn.py",
@@ skipping 89 matching lines @@
   runtime_enabled_features_in = "RuntimeEnabledFeatures.in"
   source_prereqs = scripts_for_in_files + [
     runtime_enabled_features_in,
     "../build/scripts/templates/RuntimeEnabledFeatures.cpp.tmpl",
     "../build/scripts/templates/RuntimeEnabledFeatures.h.tmpl",
   ]
 
   output_path = "$root_gen_dir/blink"
   outputs = [
     "$output_path/RuntimeEnabledFeatures.cpp",
-    "$output_path/blink/RuntimeEnabledFeatures.h",
+    "$output_path/RuntimeEnabledFeatures.h",
   ]
 
   args = [
     rebase_path(runtime_enabled_features_in, root_build_dir),
     "--output_dir",
     rebase_path(output_path, root_build_dir),
   ]
 }
 
 action("color_data") {
@@ skipping 217 matching lines @@
 
     deps = [ ":blink_common" ]
   }
 }
 
 # This config is a placeholder to set up the V8 include path while the V8 GN
 # build is being worked on.
 config("v8_stub_config") {
   include_dirs = [ "//v8/include" ]
 }