Roll Observatory packages and add a roll script

polymer/lib/src/build/messages.dart

Index: polymer/lib/src/build/messages.dart
diff --git a/polymer/lib/src/build/messages.dart b/polymer/lib/src/build/messages.dart
deleted file mode 100644
index 56d4cf63ccfd7a0a4043daecfe3d28ec23c1401d..0000000000000000000000000000000000000000
--- a/polymer/lib/src/build/messages.dart
+++ /dev/null
@@ -1,628 +0,0 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-/// Contains all error and warning messages produced by polymer.
-library polymer.src.build.messages;
-
-import 'package:code_transformers/messages/messages.dart';
-import 'constants.dart';
-
-const IMPORT_NOT_FOUND = const MessageTemplate(const MessageId('polymer', 1),
-    'couldn\'t find imported asset "%-path-%" in package "%-package-%".',
-    'Import not found', '''
-An HTML import seems to be broken. This could be because the file doesn't exist
-or because the link URL is incorrect.
-''');
-
-const DUPLICATE_DEFINITION = const MessageTemplate(
-    const MessageId('polymer', 2),
-    'duplicate definition for custom tag "%-name-%".%-second-%',
-    'Duplicate definition', '''
-Custom element names are global and can only be defined once. Some common
-reasons why you might get two definitions:
-
-  * Two different elements are declared with the same name.
-  * A single HTML file defining an element, has been imported using two different
-    URLs.
-''');
-
-const USE_POLYMER_HTML = const MessageTemplate(const MessageId('polymer', 3),
-    'Missing definition for <polymer-element>, please add the following '
-    'HTML import at the top of this file: <link rel="import" '
-    'href="%-reachOutPrefix-%packages/polymer/polymer.html">.',
-    'Missing import to polymer.html', '''
-Starting with polymer 0.11.0, each file that uses the definition
-of polymer-element must import it either directly or transitively.
-''');
-
-const NO_IMPORT_WITHIN_ELEMENT = const MessageTemplate(
-    const MessageId('polymer', 4), 'Polymer.dart\'s implementation of '
-    'HTML imports are not supported within polymer element definitions, yet. '
-    'Please move the import out of this <polymer-element>.',
-    'Invalid import inside <polymer-element>', '''
-HTML imports are expected at the top of each document, outside of any
-polymer-element definitions. The polymer build process combines all your HTML
-files together so you can deploy a single HTML file with your application. This
-build process ignores imports that appear to be in the wrong location.
-''');
-
-const MISSING_INIT_POLYMER = const MessageTemplate(
-    const MessageId('polymer', 5),
-    'To run a polymer application, you need to call `initPolymer()`. You can '
-    'either include a generic script tag that does this for you:'
-    '\'<script type="application/dart">export "package:polymer/init.dart";'
-    '</script>\' or add your own script tag and call that function. '
-    'Make sure the script tag is placed after all HTML imports.',
-    'Missing call to `initPolymer()`', '''
-Your application entry point didn't have any Dart script tags, so it's missing
-some initialization needed for polymer.dart.
-''');
-
-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 ONLY_ONE_TAG = const MessageTemplate(const MessageId('polymer', 7),
-    'Only one "application/dart" script tag per document is allowed.',
-    'Multiple Dart script tags per document', '''
-Dartium currently allows only one script tag per document. Any
-additional script tags might be ignored or result in an error. This will
-likely change in the future, but for now, combine the script tags together into
-a single Dart library.
-''');
-
-const MOVE_IMPORTS_UP = const MessageTemplate(const MessageId('polymer', 8),
-    'Move HTML imports above your Dart script tag.',
-    'Imports before script tags', '''
-It is good practice to put all your HTML imports at the beginning of the
-document, above any Dart script tags. Today, the execution of Dart script tags
-is not synchronous in Dartium, so the difference is not noticeable. However,
-Dartium that will eventually change and make the timing of script tags execution
-match how they are in JavaScript. At that point the order of your imports with
-respect to script tags will be important. Following the practice of putting
-imports first protects your app from a future breaking change in this respect.
-''');
-
-const MISSING_HREF = const MessageTemplate(const MessageId('polymer', 9),
-    'link rel="%-rel-%" missing href.', 'Missing href on a `<link>` tag',
-    'All `<link>` tags should have a valid URL to a resource.');
-
-const ELEMENT_DEPRECATED_EONS_AGO = const MessageTemplate(
-    const MessageId('polymer', 10),
-    '<element> elements are not supported, use <polymer-element> instead.',
-    '`<element>` is deprecated', '''
-Long ago `<polymer-element>` used to be called `<element>`. You probably ran
-into this error if you were migrating code that was written on a very early
-version of polymer.
-''');
-
-// TODO(jmesserly): this warning is wrong if someone is using raw custom
-// elements. Is there another way we can handle this warning that won't
-// generate false positives?
-const CUSTOM_ELEMENT_NOT_FOUND = const MessageTemplate(
-    const MessageId('polymer', 11),
-    'custom element with name "%-tag-%" not found.',
-    'Definition of a custom element not found', '''
-The polymer build was not able to find the definition of a custom element. This
-can happen if an element is defined with a `<polymer-element>` tag, but you are
-missing an HTML import or the import link is incorrect.
-
-This warning can also be a false alarm. For instance, when an element is defined
-programatically using `document.registerElement`. In that case the polymer build
-will not be able to see the definition and will produce this warning.
-''');
-
-const SCRIPT_TAG_SEEMS_EMPTY = const MessageTemplate(
-    const MessageId('polymer', 12), 'script tag seems empty.',
-    'Empty script tag',
-    'Script tags should either have a `src` attribute or a non-empty body.');
-
-const EXPECTED_DART_MIME_TYPE = const MessageTemplate(
-    const MessageId('polymer', 13),
-    'Wrong script type, expected type="application/dart".',
-    'Expected Dart mime-type', '''
-You seem to have a `.dart` extension on a script tag, but the mime-type
-doesn't match `application/dart`.
-''');
-
-const EXPECTED_DART_EXTENSION = const MessageTemplate(
-    const MessageId('polymer', 14),
-    '"application/dart" scripts should use the .dart file extension.',
-    'Expected Dart file extension', '''
-You are using the `application/dart` mime-type on a script tag, so
-the URL to the script source URL should have a `.dart` extension.
-''');
-
-const FOUND_BOTH_SCRIPT_SRC_AND_TEXT = const MessageTemplate(
-    const MessageId('polymer', 15),
-    'script tag has "src" attribute and also has script text.',
-    'Script with both src and inline text', '''
-You have a script tag that includes both a `src` attribute and inline script
-text. You must choose one or the other.
-''');
-
-const BAD_INSTANTIATION_MISSING_BASE_TAG = const MessageTemplate(
-    const MessageId('polymer', 16),
-    'custom element "%-tag-%" extends from "%-base-%", but '
-    'this tag will not include the default properties of "%-base-%". '
-    'To fix this, either write this tag as <%-base-% '
-    'is="%-tag-%"> or remove the "extends" attribute from '
-    'the custom element declaration.',
-    'Incorrect instantiation: missing base tag in instantiation', '''
-When you declare that a custom element extends from a base tag, for example:
-
-    <polymer-element name="my-example" extends="ul">
-
-or:
-
-    <polymer-element name="my-example2" extends="ul">
-    <polymer-element name="my-example" extends="my-example2">
-
-You should instantiate `my-example` by using this syntax:
-
-    <ul is="my-example">
-
-And not:
-
-    <my-example>
-
-Only elements that don't extend from existing HTML elements are created using
-the latter form.
-
-This is because browsers first create the base element, and then upgrade it to
-have the extra functionality of your custom element. In the example above, using
-`<ul>` tells the browser which base type it must create before
-doing the upgrade.
-''');
-
-const BAD_INSTANTIATION_BOGUS_BASE_TAG = const MessageTemplate(
-    const MessageId('polymer', 17),
-    'custom element "%-tag-%" doesn\'t declare any type '
-    'extensions. To fix this, either rewrite this tag as '
-    '<%-tag-%> or add \'extends="%-base-%"\' to '
-    'the custom element declaration.',
-    'Incorrect instantiation: extra `is` attribute or missing `extends` '
-    'in declaration', '''
-Creating a custom element using the syntax:
-
-    <ul is="my-example">
-
-means that the declaration of `my-example` extends transitively from `ul`. This
-error message is shown if the definition of `my-example` doesn't declare this
-extension. It might be that you no longer extend from the base element, in which
-case the fix is to change the instantiation to:
-
-    <my-example>
-
-Another possibility is that the declaration needs to be fixed to include the
-`extends` attribute, for example:
-
-    <polymer-element name="my-example" extends="ul">
-''');
-
-const BAD_INSTANTIATION_WRONG_BASE_TAG = const MessageTemplate(
-    const MessageId('polymer', 18),
-    'custom element "%-tag-%" extends from "%-base-%". '
-    'Did you mean to write <%-base-% is="%-tag-%">?',
-    'Incorrect instantiation: base tag seems wrong', '''
-It seems you have a declaration like:
-
-    <polymer-element name="my-example" extends="div">
-
-but an instantiation like:
-
-    <span is="my-example">
-
-Both the declaration and the instantiation need to match on the base type. So
-either the instantiation needs to be fixed to be more like:
-
-    <span is="my-example">
-
-or the declaration should be fixed to be like:
-
-    <polymer-element name="my-example" extends="span">
-''');
-
-const NO_DASHES_IN_CUSTOM_ATTRIBUTES = const MessageTemplate(
-    const MessageId('polymer', 19),
-    'PolymerElement no longer recognizes attribute names with '
-    'dashes such as "%-name-%". Use %-alternative-% '
-    'instead (both forms are equivalent in HTML).',
-    'No dashes allowed in custom attributes', '''
-Polymer used to recognize attributes with dashes like `my-name` and convert them
-to match properties where dashes were removed, and words follow the camelCase
-style (for example `myName`). This feature is no longer available. Now simply
-use the same name as the property.
-
-Because HTML attributes are case-insensitive, you can also write the name of
-your property entirely in lowercase. Just be sure that your custom-elements
-don't declare two properties with the same name but different capitalization.
-''');
-
-const EVENT_HANDLERS_ONLY_WITHIN_POLYMER = const MessageTemplate(
-    const MessageId('polymer', 20),
-    'Inline event handlers are only supported inside '
-    'declarations of <polymer-element>.', 'Event handlers not supported here',
-    '''
-Bindings of the form `{{ }}` are supported inside `<template>` nodes, even outside
-of `<polymer-element>` declarations. However, those bindings only support binding
-values into the content of a node or an attribute.
-
-Inline event handlers of the form `on-click="{{method}}"` are a special feature
-of polymer elements, so they are only supported inside `<polymer-element>`
-definitions.
-''');
-
-const INVALID_EVENT_HANDLER_BODY = const MessageTemplate(
-    const MessageId('polymer', 21),
-    'Invalid event handler body "%-value-%". Declare a method '
-    'in your custom element "void handlerName(event, detail, target)" '
-    'and use the form %-name-%="{{handlerName}}".',
-    'No expressions allowed in event handler bindings', '''
-Unlike data bindings, event handler bindings of the form `on-click="{{method}}"`
-are not evaluated as expressions. They are meant to just contain a simple name
-that resolves to a method in your polymer element's class definition.
-''');
-
-const NESTED_POLYMER_ELEMENT = const MessageTemplate(
-    const MessageId('polymer', 22),
-    'Nested polymer element definitions are not allowed.',
-    'Nested polymer element definitions not allowed', '''
-Because custom element names are global, there is no need to have a
-`<polymer-element>` definition nested within a `<polymer-element>`. If you have
-a definition inside another, move the second definition out.
-
-You might see this error if you have an HTML import within a polymer element.
-You should be able to move the import out of the element definition.
-''');
-
-const MISSING_TAG_NAME = const MessageTemplate(const MessageId('polymer', 23),
-    'Missing tag name of the custom element. Please include an '
-    'attribute like \'name="your-tag-name"\'.',
-    'Polymer element definitions without a name', '''
-Polymer element definitions must have a name. You can include a name by using
-the `name` attribute in `<polymer-element>` for example:
-
-    <polymer-element name="my-example">
-''');
-
-final INVALID_TAG_NAME = new MessageTemplate(const MessageId('polymer', 24),
-    'Invalid name "%-name-%". Custom element names must have '
-    'at least one dash (-) and can\'t be any of the following names: '
-    '${invalidTagNames.keys.join(", ")}.', 'Custom element name missing a dash',
-    '''
-Custom element names must have a dash (`-`) and can\'t be any of the following
-reserved names:
-
-${invalidTagNames.keys.map((e) => '  * `$e`\n').join('')}
-
-''');
-
-const INLINE_IMPORT_FAIL = const MessageTemplate(const MessageId('polymer', 25),
-    'Failed to inline HTML import: %-error-%', 'Error while inlining an import',
-    '''
-An error occurred while inlining an import in the polymer build. This is often
-the result of a broken HTML import.
-''');
-
-const INLINE_STYLE_FAIL = const MessageTemplate(const MessageId('polymer', 26),
-    'Failed to inline stylesheet: %-error-%',
-    'Error while inlining a stylesheet', '''
-An error occurred while inlining a stylesheet in the polymer build. This is
-often the result of a broken URL in a `<link rel="stylesheet" href="...">`.
-''');
-
-const SCRIPT_FILE_NOT_FOUND = const MessageTemplate(
-    const MessageId('polymer', 27), 'Script file at "%-url-%" not found.',
-    'URL to a script file might be incorrect', '''
-An error occurred trying to read a script tag on a given URL. This is often the
-result of a broken URL in a `<script src="...">`.
-''');
-
-const USE_UNDERSCORE_PREFIX = const MessageTemplate(
-    const MessageId('polymer', 28),
-    'When using bindings with the "%-name-%" attribute you may '
-    'experience errors in certain browsers. Please use the '
-    '"_%-name-%" attribute instead.', 'Attribute missing "_" prefix', '''
-Not all browsers support bindings to certain attributes, especially URL
-attributes. Some browsers might sanitize attributes and result in an
-incorrect value. For this reason polymer provides a special set of attributes
-that let you bypass any browser internal attribute validation. The name of the
-attribute is the same as the original attribute, but with a leading underscore.
-For example, instead of writing:
-
-    <img src="{{binding}}">
-
-you can write:
-
-    <img _src="{{binding}}">
-
-For more information, see <http://goo.gl/5av8cU>.
-''');
-
-const DONT_USE_UNDERSCORE_PREFIX = const MessageTemplate(
-    const MessageId('polymer', 29),
-    'The "_%-name-%" attribute is only supported when using bindings. '
-    'Please change to the "%-name-%" attribute.',
-    'Attribute with extra "_" prefix', '''
-A special attribute exists to support bindings on URL attributes. For example,
-this correctly binds the `src` attribute in an image:
-
-    <img _src="{{binding}}">
-
-However, this special `_src` attribute is only available for bindings. If you
-just have a URL, use the normal `src` attribute instead.
-''');
-
-const INTERNAL_ERROR_DONT_KNOW_HOW_TO_IMPORT = const MessageTemplate(
-    const MessageId('polymer', 30),
-    "internal error: don't know how to include %-target-% from"
-    " %-source-%.%-extra-%", "Internal error: don't know how to include a URL",
-    '''
-Sorry, you just ran into a bug in the polymer transformer code. Please file a
-bug at <http://dartbug.com/new> including, if possible, some example code that
-can help the team reproduce the issue.
-''');
-
-const INTERNAL_ERROR_UNEXPECTED_SCRIPT = const MessageTemplate(
-    const MessageId('polymer', 31),
-    'unexpected script. The ScriptCompactor transformer should run after '
-    'running the ImportInliner', 'Internal error: phases run out of order', '''
-Sorry, you just ran into a bug in the polymer transformer code. Please file a
-bug at <http://dartbug.com/new> including, if possible, some example code that
-can help the team reproduce the issue.
-''');
-
-const PRIVATE_CUSTOM_TAG = const MessageTemplate(const MessageId('polymer', 32),
-    '@CustomTag is not currently supported on private classes:'
-    ' %-name-%. Consider making this class public, or create a '
-    'public initialization method marked with `@initMethod` that calls '
-    '`Polymer.register(%-name-%, %-className-%)`.',
-    '`@CustomTag` used on a private class', '''
-The `@CustomTag` annotation is currently only supported on public classes. If
-you need to register a custom element whose implementation is a private class
-(that is, a class whose name starts with `_`), you can still do so by invoking
-`Polymer.register` within a public method marked with `@initMethod`.
-''');
-
-const PRIVATE_INIT_METHOD = const MessageTemplate(
-    const MessageId('polymer', 33),
-    '@initMethod is no longer supported on private functions: %-name-%',
-    '`@initMethod` is on a private function', '''
-The `@initMethod` annotation is currently only supported on public top-level
-functions.
-''');
-
-const MISSING_ANNOTATION_ARGUMENT = const MessageTemplate(
-    const MessageId('polymer', 34), 'Missing argument in @%-name-% annotation',
-    'Missing argument in annotation',
-    'The annotation expects one argument, but the argument was not provided.');
-
-const INVALID_ANNOTATION_ARGUMENT = const MessageTemplate(
-    const MessageId('polymer', 35),
-    'The parameter to @%-name-% seems to be invalid.',
-    'Invalid argument in annotation', '''
-The polymer transformer was not able to extract a constant value for the
-annotation argument. This can happen if your code is currently in a state that
-can't be analyzed (for example, it has parse errors) or if the expression passed
-as an argument is invalid (for example, it is not a compile-time constant).
-''');
-
-const NO_INITIALIZATION = const MessageTemplate(const MessageId('polymer', 36),
-    'No polymer initializers were found. Make sure to either '
-    'annotate your polymer elements with @CustomTag or include a '
-    'top level method annotated with @initMethod that registers your '
-    'elements. Both annotations are defined in the polymer library ('
-    'package:polymer/polymer.dart).', 'No polymer initializers found', '''
-No polymer initializers were found. Make sure to either 
-annotate your polymer elements with @CustomTag or include a 
-top level method annotated with @initMethod that registers your 
-elements. Both annotations are defined in the polymer library (
-package:polymer/polymer.dart).
-''');
-
-const AT_EXPRESSION_REMOVED = const MessageTemplate(
-    const MessageId('polymer', 37),
-    'event bindings with @ are no longer supported',
-    'Event bindings with @ are no longer supported', '''
-For a while there was an undocumented feature that allowed users to include
-expressions in event bindings using the `@` prefix, for example:
-
-    <div on-click="{{@a.b.c}}">
-    
-This feature is no longer supported.
-''');
-
-const NO_PRIVATE_EVENT_HANDLERS = const MessageTemplate(
-    const MessageId('polymer', 38),
-    'private symbols cannot be used in event handlers',
-    'Private symbol in event handler', '''
-Currently private members can't be used in event handler bindings. So you can't
-write:
-
-    <div on-click="{{_method}}">
-
-This restriction might be removed in the future, but for now, you need to make
-your event handlers public.
-''');
-
-const NO_PRIVATE_SYMBOLS_IN_BINDINGS = const MessageTemplate(
-    const MessageId('polymer', 39), 'private symbols are not supported',
-    'Private symbol in binding expression', '''
-Private members can't be used in binding expressions. For example, you can't
-write:
-
-    <div>{{a.b._c}}</div>
-''');
-
-const HTML5_WARNING = const MessageTemplate(const MessageId('polymer', 40),
-    '(from html) %-message-%',
-    'A warning was found while parsing the HTML document', '''
-The polymer transformer uses a parser that implements the HTML5 spec
-(`html`). This message reports a
-warning that the parser detected.
-''');
-
-const POSSIBLE_FUOC = const MessageTemplate(const MessageId('polymer', 41),
-    'Custom element found in document body without an '
-    '"unresolved" attribute on it or one of its parents. This means '
-    'your app probably has a flash of unstyled content before it '
-    'finishes loading.', 'Possible flash of unstyled content', '''
-Custom element found in document body without an "unresolved" attribute on it or
-one of its parents. This means your app probably has a flash of unstyled content
-before it finishes loading. See <http://goo.gl/iN03Pj> for more info.
-''');
-
-const CSS_FILE_INLINED_MULTIPLE_TIMES = const MessageTemplate(
-    const MessageId('polymer', 42),
-    'The css file %-url-% was inlined multiple times.',
-    'A css file was inlined multiple times.', '''
-Css files are inlined by default, but if you import the same one in multiple
-places you probably want to change this behavior to prevent duplicate code.
-
-There are three typical options for dealing with this:
-
-1. **Recommended**: Use the `core-style` element from the `core_elements`
-    package.
-
-    The easiest way to do this is change your `*.css` file into a `*.html` file,
-    and wrap the entire thing in a `core-style` with an id, something like the
-    following:
-
-        <core-style id="my-theme">
-          p {
-            color: red;
-          }
-        </core-style>
-
-    Now, in the files where you were previously including the
-    `<link rel="stylesheet">` tag, add an html import to the top of your
-    document pointing to the new html file. Once that is done, replace the
-    `<link>` tag with a `<core-style>` tag which has a `ref` attribute that is
-    the same as the `id` attribute on the `<core-style>` you created. So your
-    original html:
-
-        <polymer-element name="my-element">
-          <template>
-            <link rel="stylesheet" href="my_theme.css">
-          </template>
-        </polymer-element>
-
-    Becomes:
-
-        <link rel="import" href="my_theme.html">
-        <polymer-element name="my-element">
-          <template>
-            <core-style ref="my-theme"></core-style>
-          </template>
-        </polymer-element>
-
-2. Opt out of the inlining for this file in your pubspec.yaml:
-
-        transformers:
-        - polymer:
-            inline_stylesheets:
-              web/my_file.css: false
-
-    **Warning**: `<link rel="stylesheet">` tags are not natively supported in
-    shadow-dom. Polymer will do an xhr request for the stylesheet and inject an
-    inline style with its contents in each place this stylesheet occurs.
-
-3. Opt into multiple inlining in your pubspec.yaml:
-
-        transformers:
-        - polymer:
-            inline_stylesheets:
-              web/my_file.css: true
-
-    **Warning**: You should only ever do this if your stylesheet is very small.
-    Even then stylesheets tend to grow quickly and almost never decrease in size
-    so this method is highly discouraged.
-''');
-
-const DART_SUPPORT_NO_LONGER_REQUIRED = const MessageTemplate(
-    const MessageId('polymer', 43),
-    'No need to include "dart_support.js" by hand anymore.',
-    '"dart_support.js" injected automatically', '''
-The script `packages/web_components/dart_support.js` is still used, but you no
-longer need to put it in your application's entrypoint.
-
-In the past this file served two purposes:
-
-  * to make dart2js work well with the web_components polyfills, and
-  * to support registering Dart APIs for JavaScript custom elements.
-
-Now, the code from `dart_support.js` is split in two halves. The half for
-dart2js is now injected by the polymer transformers automatically during `pub
-build`. The `web_components` package provides an HTML file containing the other
-half.  Developers of packages that wrap JavaScript custom elements (like
-`core_elements` and `paper_elements`) will import that file directly, so
-application developers don't have to worry about it anymore.
-''');
-
-const SCRIPT_INCLUDED_MORE_THAN_ONCE = const MessageTemplate(
-    const MessageId('polymer', 44),
-    'The `%-url-%` script was included more than once.',
-    'Dart script file included more than once.', '''
-Duplicate dart scripts often happen if you have multiple html imports that
-include the same script. The simplest workaround for this is to move your dart
-script to its own html file, and import that instead of the script (html imports
-are automatically deduped).
-
-For example:
-
-    <script type="application/dart" src="foo.dart"></script>
-
-Should turn into:
-
-    <link rel="import" href="foo.html">
-
-And `foo.html` should look like:
-
-    <script type="application/dart" src="foo.dart"></script>
-''');
-
-const WEB_COMPONENTS_NO_LONGER_REQUIRED = const MessageTemplate(
-    const MessageId('polymer', 45),
-    'No need to include "webcomponents.js" by hand anymore.',
-    '"webcomponents.js" injected automatically', '''
-The script `packages/web_components/webcomponents.js` is still used, but you no
-longer need to put it in your application's entrypoint.
-
-The polyfills provided by this file are no longer required in chrome and will
-automatically be added during `pub build` and `pub serve`.
-''');
-
-const PLATFORM_JS_RENAMED = const MessageTemplate(
-    const MessageId('polymer', 46),
-    '"platform.js" has been renamed to "webcomponents.js".',
-    '"platform.js" renamed to "webcomponents.js".', '''
-The script `packages/web_components/platform.js` has been renamed to
-`packages/web_components/webcomponents.js`. This is automatically fixed in
-`pub serve` and `pub build` but we may remove this functionality in the next
-breaking version of Polymer.
-
-In addition, it is no longer required that you include this file directly, as
-`pub build` and `pub serve` will inject it for you, and its not required when
-running in dartium with a local server.
-''');
-
-const NO_DART_SCRIPT = const MessageTemplate(const MessageId('polymer', 47),
-    'No dart script was found in the entry point: %-url-%.',
-    'Missing Dart script tag in entry point.', '''
-All entry points should have a dart script file. This can sometimes happen if
-you are using the default entry_points value in your polymer transformer
-configuration but have files which are not entry points in your `web` or `test`
-directory. Moving these files to your `lib` folder or specifying all your entry
-points in your configuration will fix this.
-''');
-
-const MISSING_POLYMER_DART = const MessageTemplate(
-    const MessageId('polymer', 48), 'polymer.dart not imported.',
-    'polymer.dart not imported.', '''
-It is required that your application contains an import to
-`package:polymer/polymer.dart`.
-''');