Build lib/_internal/analysis_summary during SDK build.

utils/dartanalyzer/dartanalyzer.gyp

Index: utils/dartanalyzer/dartanalyzer.gyp
diff --git a/utils/dartanalyzer/dartanalyzer.gyp b/utils/dartanalyzer/dartanalyzer.gyp
index 9617f054204fb7a82e3af36e03eb113ddace0886..ba6e6dd381166f6937b9848a9cf92d43c9b9635b 100644
--- a/utils/dartanalyzer/dartanalyzer.gyp
+++ b/utils/dartanalyzer/dartanalyzer.gyp
@@ -30,6 +30,24 @@
             '../../pkg/analyzer_cli/bin/analyzer.dart',
           ],
         },
+        {
+          'action_name': 'generate_summaries',
+          'inputs': [
+            '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)dart<(EXECUTABLE_SUFFIX)',
+            '../../sdk/lib/_internal/sdk_library_metadata/lib/libraries.dart',
+            '<(SHARED_INTERMEDIATE_DIR)/packages.stamp',
+            '<!@(["python", "../../tools/list_files.py", "\\.dart$", "../../pkg/analyzer"])',
+          ],
+          'outputs': [
+            '<(SHARED_INTERMEDIATE_DIR)/spec.sum',
+            '<(SHARED_INTERMEDIATE_DIR)/strong.sum',
+          ],
+          'action': [
+            '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)dart<(EXECUTABLE_SUFFIX)',
+            '../../pkg/analyzer/tool/summary/build_sdk_summaries.dart',
+            '<(SHARED_INTERMEDIATE_DIR)',
+          ],
+        },
       ],
     },
   ],