Extract create_sdk build rule to own file to avoid cycle.

dart/dart.gyp

Index: dart/dart.gyp
diff --git a/dart/dart.gyp b/dart/dart.gyp
index 6723ce4990b745f9410dea169acd66af44c4e893..17eea78834790b62049c052c582944f14e1fbb62 100644
--- a/dart/dart.gyp
+++ b/dart/dart.gyp
@@ -9,7 +9,7 @@
       'type': 'none',
       'dependencies': [
         'analyzer',
-        'create_sdk',
+        'create_sdk.gyp:create_sdk',
         'dart2js',
         'editor',
         'packages',
@@ -34,46 +34,6 @@
       ],
     },
     {
-      'target_name': 'create_sdk',
-      'type': 'none',
-      'dependencies': [
-        'runtime/dart-runtime.gyp:dart',
-        'utils/compiler/compiler.gyp:dart2js',
-        'utils/pub/pub.gyp:pub',
-        'dartfmt',
-        'analyzer',
-      ],
-      'actions': [
-        {
-          'action_name': 'create_sdk_py',
-          'inputs': [
-            '<!@(["python", "tools/list_files.py", "\\.dart$", "sdk/lib"])',
-            '<!@(["python", "tools/list_files.py", "", '
-                '"sdk/lib/_internal/lib/preambles"])',
-            '<!@(["python", "tools/list_files.py", "", "sdk/bin"])',
-            'tools/create_sdk.py',
-            '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)dart<(EXECUTABLE_SUFFIX)',
-            '<(SHARED_INTERMEDIATE_DIR)/dart2js.dart.snapshot',
-            '<(SHARED_INTERMEDIATE_DIR)/utils_wrapper.dart.snapshot',
-            '<(SHARED_INTERMEDIATE_DIR)/pub.dart.snapshot',
-            '<(PRODUCT_DIR)/dartanalyzer/dartanalyzer.jar',
-            '<(SHARED_INTERMEDIATE_DIR)/dartfmt.dart.snapshot',
-            'tools/VERSION'
-          ],
-          'outputs': [
-            '<(PRODUCT_DIR)/dart-sdk/README',
-          ],
-          'action': [
-            'python',
-            'tools/create_sdk.py',
-            '--sdk_output_dir', '<(PRODUCT_DIR)/dart-sdk',
-            '--snapshot_location', '<(SHARED_INTERMEDIATE_DIR)/'
-          ],
-          'message': 'Creating SDK.',
-        },
-      ],
-    },
-    {
       'target_name': 'dart2js',
       'type': 'none',
       'dependencies': [
@@ -101,7 +61,7 @@
       'target_name': 'dart2dart_bot',
       'type': 'none',
       'dependencies': [
-        'create_sdk',
+        'create_sdk.gyp:create_sdk',
         'packages',
       ],
     },
@@ -112,7 +72,7 @@
       'target_name': 'dartc_bot',
       'type': 'none',
       'dependencies': [
-        'create_sdk',
+        'create_sdk.gyp:create_sdk',
         'packages',
       ],
     },
@@ -123,8 +83,9 @@
       'target_name': 'dart2js_bot',
       'type': 'none',
       'dependencies': [
-        'create_sdk',
+        'create_sdk.gyp:create_sdk',
         'packages',
+        'try',
       ],
     },
     {
@@ -140,8 +101,8 @@
       'dependencies': [
         'editor/build/generated/editor_deps.gyp:editor_deps',
 
-        # This dependency on create_sdk does not mean that the Editor
-        # is rebuilt if the SDK is. It only means that when you build
+        # This dependency on create_sdk.gyp:create_sdk does not mean that the
+        # Editor is rebuilt if the SDK is. It only means that when you build
         # the Editor, you should also build the SDK. If we wanted to
         # make sure that the editor is rebuilt when the SDK is, we
         # should list a *file* in PRODUCT_DIR which the action below
@@ -149,7 +110,7 @@
         # This is the desired behavior as we would otherwise have to
         # rebuild the editor each time the VM, dart2js, or library
         # code changes.
-        'create_sdk',
+        'create_sdk.gyp:create_sdk',
       ],
       'actions': [
         {
@@ -157,7 +118,8 @@
           'inputs': [
             'tools/create_editor.py',
             '<(SHARED_INTERMEDIATE_DIR)/editor_deps/editor.stamp',
-            '<!@(["python", "tools/list_files.py", "", "editor/tools/features/com.google.dart.tools.deploy.feature_releng"])',
+            '<!@(["python", "tools/list_files.py", "", "editor/tools/features/'
+            'com.google.dart.tools.deploy.feature_releng"])',
           ],
           'outputs': [
             '<(PRODUCT_DIR)/editor/VERSION',
@@ -196,7 +158,6 @@
       'target_name': 'try',
       'type': 'none',
       'dependencies': [
-        'create_sdk',
         'site/try/build_try.gyp:try_site',
       ],
     },