Start pulling pub from its own repo.

utils/pub/pub.gyp

Index: utils/pub/pub.gyp
diff --git a/utils/pub/pub.gyp b/utils/pub/pub.gyp
index f15df3299a513a1ba895aa05019cc25ddebffa9c..252a255a32df066addbda826d780ebaad6f5e18a 100644
--- a/utils/pub/pub.gyp
+++ b/utils/pub/pub.gyp
@@ -11,8 +11,7 @@
         '../../runtime/dart-runtime.gyp:dart',
         '../../pkg/pkg.gyp:pkg_packages',
         '../../pkg/pkg_files.gyp:pkg_files_stamp',
-        '../../utils/compiler/compiler.gyp:dart2js_files_stamp',
-        'pub_files_stamp'
+        '../../utils/compiler/compiler.gyp:dart2js_files_stamp'
       ],
       'actions': [
         {
@@ -20,7 +19,6 @@
           'inputs': [
             '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)dart<(EXECUTABLE_SUFFIX)',
             '../../sdk/lib/_internal/libraries.dart',
-            '<(SHARED_INTERMEDIATE_DIR)/pub_files.stamp',
             '<(SHARED_INTERMEDIATE_DIR)/dart2js_files.stamp',
             '<(SHARED_INTERMEDIATE_DIR)/pkg_files.stamp',
             '<(SHARED_INTERMEDIATE_DIR)/packages.stamp',
@@ -32,37 +30,10 @@
             '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)dart<(EXECUTABLE_SUFFIX)',
             '--package-root=<(PRODUCT_DIR)/packages/',
             '--snapshot=<(SHARED_INTERMEDIATE_DIR)/pub.dart.snapshot',
-            '../../sdk/lib/_internal/pub/bin/pub.dart',
+            '../../third_party/pkg_tested/pub/bin/pub.dart',
           ]
         },
       ],
     },
-    # Other targets depend on pub files, but have to many inputs, which causes
-    # issues on some platforms.
-    # This target lists all the files in sdk/lib/_internal/pub,
-    # and creates a single pub_files.stamp
-    {
-      'target_name': 'pub_files_stamp',
-      'type': 'none',
-      'actions': [
-        {
-          'action_name': 'make_pub_files_stamp',
-          'inputs': [
-            '../../tools/create_timestamp_file.py',
-            '<!@(["python", "../../tools/list_files.py", "\\.dart$",'
-                ' "../../sdk/lib/_internal/pub"])',
-          ],
-          'outputs': [
-            '<(SHARED_INTERMEDIATE_DIR)/pub_files.stamp',
-          ],
-          'action': [
-            'python', '../../tools/create_timestamp_file.py',
-            '<@(_outputs)',
-          ],
-        },
-      ],
-    }
-
-
   ],
 }