Move the dart2js snapshot into bin directory of sdk root.

utils/compiler/compiler.gyp

Index: utils/compiler/compiler.gyp
===================================================================
--- utils/compiler/compiler.gyp	(revision 21179)
+++ utils/compiler/compiler.gyp	(working copy)
@@ -22,17 +22,13 @@
             '<!@(["python", "../../tools/list_files.py", "\\.dart$", "../../sdk/lib/_internal/compiler", "../../runtime/lib"])',
           ],
           'outputs': [
-            '<(PRODUCT_DIR)/dart2js.snapshot',
+            '<(SHARED_INTERMEDIATE_DIR)/utils_wrapper.dart.snapshot',
           ],
           'action': [
             '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)dart<(EXECUTABLE_SUFFIX)',
-            # Note: we don't store the snapshot in the location where
-            # the dart2js script is looking for it.  The motivation
-            # for that is to support an incremental development model
-            # for dart2js compiler engineers.  However, we install the
-            # snapshot in the proper location when building the SDK.
-            '--generate-script-snapshot=<(PRODUCT_DIR)/dart2js.snapshot',
-            '../../sdk/lib/_internal/compiler/implementation/dart2js.dart',
+            'create_snapshot.dart',
+            '--output_dir=<(SHARED_INTERMEDIATE_DIR)',
+            '--dart2js_main=sdk/lib/_internal/compiler/implementation/dart2js.dart',
           ],
         },
       ],