Roll Observatory packages and add a roll script

packages/dart_style/test/regression/0100/0185.stmt

Index: packages/dart_style/test/regression/0100/0185.stmt
diff --git a/packages/dart_style/test/regression/0100/0185.stmt b/packages/dart_style/test/regression/0100/0185.stmt
new file mode 100644
index 0000000000000000000000000000000000000000..aac3da23d47b00d422ea06ae96e278ffb29e619d
--- /dev/null
+++ b/packages/dart_style/test/regression/0100/0185.stmt
@@ -0,0 +1,14 @@
+>>>
+const NO_DART_SCRIPT_AND_EXPERIMENTAL = const MessageTemplate(
+    const MessageId('polymer', 6),
+    'The experimental bootstrap feature doesn\'t support script tags on '
+    'the main document (for now).',
+    'Script tags with experimental bootstrap',
+    'This experimental feature is no longer supported.');
+<<<
+const NO_DART_SCRIPT_AND_EXPERIMENTAL = const MessageTemplate(
+    const MessageId('polymer', 6),
+    'The experimental bootstrap feature doesn\'t support script tags on '
+    'the main document (for now).',
+    'Script tags with experimental bootstrap',
+    'This experimental feature is no longer supported.');