Refactor the gypi files to eliminate some redundancy.

bin/bin.gypi

Index: bin/bin.gypi
===================================================================
--- bin/bin.gypi	(revision 1997)
+++ bin/bin.gypi	(working copy)
@@ -20,27 +20,12 @@
           'msvs_cygwin_dirs': ['<(cygwin_dir)'],
         }],
       ],
-      'sources': [
-        'builtin.dart',
-        'buffer_list.dart',
-        'directory.dart',
-        'directory_impl.dart',
-        'eventhandler.dart',
-        'file.dart',
-        'file_impl.dart',
-        'input_stream.dart',
-        'output_stream.dart',
-        'string_stream.dart',
-        'platform.dart',
-        'platform_impl.dart',
-        'process.dart',
-        'process_impl.dart',
-        'socket.dart',
-        'socket_impl.dart',
-        'socket_stream.dart',
-        'timer.dart',
-        'timer_impl.dart',
+      'includes': [
+        'builtin_sources.gypi',
       ],
+      'sources/': [
+        ['exclude', '\\.(cc|h)$'],
+      ],
       'actions': [
         {
           'action_name': 'generate_builtin_cc',
@@ -75,46 +60,13 @@
       'sources': [
         'builtin_natives.cc',
         'builtin.h',
-        'dartutils.h',
-        'dartutils.cc',
-        'directory.h',
-        'directory.cc',
-        'directory_posix.cc',
-        'directory_win.cc',
-        'eventhandler.cc',
-        'eventhandler.h',
-        'eventhandler_linux.cc',
-        'eventhandler_linux.h',
-        'eventhandler_macos.cc',
-        'eventhandler_macos.h',
-        'eventhandler_win.cc',
-        'eventhandler_win.h',
-        'file.cc',
-        'file.h',
-        'file_linux.cc',
-        'file_macos.cc',
-        'file_win.cc',
-        'fdutils.h',
-        'fdutils_linux.cc',
-        'fdutils_macos.cc',
-        'globals.h',
-        'platform.cc',
-        'platform.h',
-        'platform_linux.cc',
-        'platform_macos.cc',
-        'platform_win.cc',
-        'process.cc',
-        'process.h',
-        'process_linux.cc',
-        'process_macos.cc',
-        'process_win.cc',
-        'socket.cc',
-        'socket.h',
-        'socket_linux.cc',
-        'socket_macos.cc',
-        'socket_win.cc',
-        'set.h',
       ],
+      'includes': [
+        'builtin_sources.gypi',
+      ],
+      'sources/': [
+        ['exclude', '_test\\.(cc|h)$'],
+      ],
       'conditions': [
         ['OS=="win"', {'sources/' : [
           ['exclude', 'fdutils.h'],
@@ -139,31 +91,6 @@
       ],
     },
     {
-      # Completely statically linked dart binary.
-      'target_name': 'dart_no_snapshot',
-      'type': 'executable',
-      'dependencies': [
-        'libdart_withcore',
-        'libdart_builtin',
-      ],
-      'include_dirs': [
-        '..',
-      ],
-      'sources': [
-        'main.cc',
-        'snapshot_empty.cc',
-        'builtin.cc',
-        # Include generated source files.
-        '<(builtin_cc_file)',
-      ],
-      'conditions': [
-        ['OS=="win"', {
-          'link_settings': {
-            'libraries': [ '-lws2_32.lib', '-lRpcrt4.lib' ],
-          },
-       }]],
-    },
-    {
       # Completely statically linked binary for generating snapshots.
       'target_name': 'gen_snapshot',
       'type': 'executable',
@@ -257,6 +184,7 @@
       'type': 'executable',
       'dependencies': [
         'libdart_withcore',
+	'libdart_builtin',
         'generate_snapshot_test_dat_file',
       ],
       'include_dirs': [
@@ -265,48 +193,9 @@
       ],
       'sources': [
         'run_vm_tests.cc',
-        'dartutils.h',
-        'dartutils.cc',
-        'directory.h',
-        'directory.cc',
-        'directory_posix.cc',
-        'directory_win.cc',
-        'eventhandler.cc',
-        'eventhandler.h',
-        'eventhandler_linux.cc',
-        'eventhandler_linux.h',
-        'eventhandler_macos.cc',
-        'eventhandler_macos.h',
-        'eventhandler_win.cc',
-        'eventhandler_win.h',
-        'file.cc',
-        'file.h',
-        'file_test.cc',
-        'file_linux.cc',
-        'file_macos.cc',
-        'file_win.cc',
-        'fdutils.h',
-        'fdutils_linux.cc',
-        'fdutils_macos.cc',
-        'platform.cc',
-        'platform.h',
-        'platform_linux.cc',
-        'platform_macos.cc',
-        'platform_win.cc',
-        'process.cc',
-        'process.h',
-        'process_linux.cc',
-        'process_macos.cc',
-        'process_win.cc',
-        'socket.cc',
-        'socket.h',
-        'socket_linux.cc',
-        'socket_macos.cc',
-        'socket_win.cc',
-        'set.h',
-        'set_test.cc',
       ],
       'includes': [
+        'builtin_sources.gypi',
         '../vm/vm_sources.gypi',
       ],
       'defines': [
@@ -317,56 +206,8 @@
         ['exclude', '\\.(cc|h)$'],
         ['include', '_test\\.(cc|h)$'],
         ['include', 'run_vm_tests.cc'],
-        ['include', 'dart_api_impl.cc'],
-        ['include', 'dartutils.h'],
-        ['include', 'dartutils.cc'],
-        ['include', 'directory.h'],
-        ['include', 'directory.cc'],
-        ['include', 'eventhandler.cc'],
-        ['include', 'eventhandler.h'],
-        ['include', 'file.cc'],
-        ['include', 'file.h'],
-        ['include', 'file_test.cc'],
-        ['include', 'platform.cc'],
-        ['include', 'platform.h'],
-        ['include', 'process.cc'],
-        ['include', 'process.h'],
-        ['include', 'socket.cc'],
-        ['include', 'socket.h'],
-        ['include', 'set_test.cc'],
       ],
       'conditions': [
-        ['OS=="linux"', {'sources/' : [
-          ['include', 'directory_posix.cc'],
-          ['include', 'eventhandler_linux.cc'],
-          ['include', 'eventhandler_linux.h'],
-          ['include', 'fdutils.h'],
-          ['include', 'fdutils_linux.cc'],
-          ['include', 'file_linux.cc'],
-          ['include', 'platform_linux.cc'],
-          ['include', 'process_linux.cc'],
-          ['include', 'socket_linux.cc'],
-        ]}],
-        ['OS=="mac"', {'sources/' : [
-          ['include', 'directory_posix.cc'],
-          ['include', 'eventhandler_macos.cc'],
-          ['include', 'eventhandler_macos.h'],
-          ['include', 'fdutils.h'],
-          ['include', 'fdutils_macos.cc'],
-          ['include', 'file_macos.cc'],
-          ['include', 'platform_macos.cc'],
-          ['include', 'process_macos.cc'],
-          ['include', 'socket_macos.cc'],
-        ]}],
-        ['OS=="win"', {'sources/' : [
-          ['include', 'directory_win.cc'],
-          ['include', 'eventhandler_win.cc'],
-          ['include', 'eventhandler_win.h'],
-          ['include', 'file_win.cc'],
-          ['include', 'platform_win.cc'],
-          ['include', 'process_win.cc'],
-          ['include', 'socket_win.cc'],
-        ]}],
         ['OS=="win"', {
           'link_settings': {
             'libraries': [ '-lws2_32.lib', '-lRpcrt4.lib' ],