Stop running pub get at gclient sync time and fix build bugs

mojo/public/dart/third_party/csslib/lib/visitor.dart

Index: mojo/public/dart/third_party/csslib/lib/visitor.dart
diff --git a/mojo/public/dart/third_party/csslib/lib/visitor.dart b/mojo/public/dart/third_party/csslib/lib/visitor.dart
new file mode 100644
index 0000000000000000000000000000000000000000..fa0f8d2bba3f39f1910dfa8704fac6df2f1cf251
--- /dev/null
+++ b/mojo/public/dart/third_party/csslib/lib/visitor.dart
@@ -0,0 +1,455 @@
+// Copyright (c) 2012, 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.
+
+library csslib.visitor;
+
+import 'package:source_span/source_span.dart';
+import 'parser.dart';
+
+part 'src/css_printer.dart';
+part 'src/tree.dart';
+part 'src/tree_base.dart';
+part 'src/tree_printer.dart';
+
+abstract class VisitorBase {
+  void visitCssComment(CssComment node);
+  void visitCommentDefinition(CommentDefinition node);
+  void visitStyleSheet(StyleSheet node);
+  void visitNoOp(NoOp node);
+  void visitTopLevelProduction(TopLevelProduction node);
+  void visitDirective(Directive node);
+  void visitMediaExpression(MediaExpression node);
+  void visitMediaQuery(MediaQuery node);
+  void visitMediaDirective(MediaDirective node);
+  void visitHostDirective(HostDirective node);
+  void visitPageDirective(PageDirective node);
+  void visitCharsetDirective(CharsetDirective node);
+  void visitImportDirective(ImportDirective node);
+  void visitKeyFrameDirective(KeyFrameDirective node);
+  void visitKeyFrameBlock(KeyFrameBlock node);
+  void visitFontFaceDirective(FontFaceDirective node);
+  void visitStyletDirective(StyletDirective node);
+  void visitNamespaceDirective(NamespaceDirective node);
+  void visitVarDefinitionDirective(VarDefinitionDirective node);
+  void visitMixinDefinition(MixinDefinition node);
+  void visitMixinRulesetDirective(MixinRulesetDirective node);
+  void visitMixinDeclarationDirective(MixinDeclarationDirective node);
+  void visitIncludeDirective(IncludeDirective node);
+  void visitContentDirective(ContentDirective node);
+
+  void visitRuleSet(RuleSet node);
+  void visitDeclarationGroup(DeclarationGroup node);
+  void visitMarginGroup(MarginGroup node);
+  void visitDeclaration(Declaration node);
+  void visitVarDefinition(VarDefinition node);
+  void visitIncludeMixinAtDeclaration(IncludeMixinAtDeclaration node);
+  void visitExtendDeclaration(ExtendDeclaration node);
+  void visitSelectorGroup(SelectorGroup node);
+  void visitSelector(Selector node);
+  void visitSimpleSelectorSequence(SimpleSelectorSequence node);
+  void visitSimpleSelector(SimpleSelector node);
+  void visitElementSelector(ElementSelector node);
+  void visitNamespaceSelector(NamespaceSelector node);
+  void visitAttributeSelector(AttributeSelector node);
+  void visitIdSelector(IdSelector node);
+  void visitClassSelector(ClassSelector node);
+  void visitPseudoClassSelector(PseudoClassSelector node);
+  void visitPseudoElementSelector(PseudoElementSelector node);
+  void visitPseudoClassFunctionSelector(PseudoClassFunctionSelector node);
+  void visitPseudoElementFunctionSelector(PseudoElementFunctionSelector node);
+  void visitNegationSelector(NegationSelector node);
+  void visitSelectorExpression(SelectorExpression node);
+
+  void visitUnicodeRangeTerm(UnicodeRangeTerm node);
+  void visitLiteralTerm(LiteralTerm node);
+  void visitHexColorTerm(HexColorTerm node);
+  void visitNumberTerm(NumberTerm node);
+  void visitUnitTerm(UnitTerm node);
+  void visitLengthTerm(LengthTerm node);
+  void visitPercentageTerm(PercentageTerm node);
+  void visitEmTerm(EmTerm node);
+  void visitExTerm(ExTerm node);
+  void visitAngleTerm(AngleTerm node);
+  void visitTimeTerm(TimeTerm node);
+  void visitFreqTerm(FreqTerm node);
+  void visitFractionTerm(FractionTerm node);
+  void visitUriTerm(UriTerm node);
+  void visitResolutionTerm(ResolutionTerm node);
+  void visitChTerm(ChTerm node);
+  void visitRemTerm(RemTerm node);
+  void visitViewportTerm(ViewportTerm node);
+  void visitFunctionTerm(FunctionTerm node);
+  void visitGroupTerm(GroupTerm node);
+  void visitItemTerm(ItemTerm node);
+  void visitIE8Term(IE8Term node);
+  void visitOperatorSlash(OperatorSlash node);
+  void visitOperatorComma(OperatorComma node);
+  void visitOperatorPlus(OperatorPlus node);
+  void visitOperatorMinus(OperatorMinus node);
+  void visitVarUsage(VarUsage node);
+
+  void visitExpressions(Expressions node);
+  void visitBinaryExpression(BinaryExpression node);
+  void visitUnaryExpression(UnaryExpression node);
+
+  void visitIdentifier(Identifier node);
+  void visitWildcard(Wildcard node);
+  void visitThisOperator(ThisOperator node);
+  void visitNegation(Negation node);
+
+  void visitDartStyleExpression(DartStyleExpression node);
+  void visitFontExpression(FontExpression node);
+  void visitBoxExpression(BoxExpression node);
+  void visitMarginExpression(MarginExpression node);
+  void visitBorderExpression(BorderExpression node);
+  void visitHeightExpression(HeightExpression node);
+  void visitPaddingExpression(PaddingExpression node);
+  void visitWidthExpression(WidthExpression node);
+}
+
+/** Base vistor class for the style sheet AST. */
+class Visitor implements VisitorBase {
+  /** Helper function to walk a list of nodes. */
+  void _visitNodeList(List<TreeNode> list) {
+    // Don't use iterable otherwise the list can't grow while using Visitor.
+    // It certainly can't have items deleted before the index being iterated
+    // but items could be added after the index.
+    for (var index = 0; index < list.length; index++) {
+      list[index].visit(this);
+    }
+  }
+
+  void visitTree(StyleSheet tree) => visitStyleSheet(tree);
+
+  void visitStyleSheet(StyleSheet ss) {
+    _visitNodeList(ss.topLevels);
+  }
+
+  void visitNoOp(NoOp node) {}
+
+  void visitTopLevelProduction(TopLevelProduction node) {}
+
+  void visitDirective(Directive node) {}
+
+  void visitCssComment(CssComment node) {}
+
+  void visitCommentDefinition(CommentDefinition node) {}
+
+  void visitMediaExpression(MediaExpression node) {
+    visitExpressions(node.exprs);
+  }
+
+  void visitMediaQuery(MediaQuery node) {
+    for (var mediaExpr in node.expressions) {
+      visitMediaExpression(mediaExpr);
+    }
+  }
+
+  void visitMediaDirective(MediaDirective node) {
+    for (var mediaQuery in node.mediaQueries) {
+      visitMediaQuery(mediaQuery);
+    }
+    for (var ruleset in node.rulesets) {
+      visitRuleSet(ruleset);
+    }
+  }
+
+  void visitHostDirective(HostDirective node) {
+    for (var ruleset in node.rulesets) {
+      visitRuleSet(ruleset);
+    }
+  }
+
+  void visitPageDirective(PageDirective node) {
+    for (var declGroup in node._declsMargin) {
+      if (declGroup is MarginGroup) {
+        visitMarginGroup(declGroup);
+      } else {
+        visitDeclarationGroup(declGroup);
+      }
+    }
+  }
+
+  void visitCharsetDirective(CharsetDirective node) {}
+
+  void visitImportDirective(ImportDirective node) {
+    for (var mediaQuery in node.mediaQueries) {
+      visitMediaQuery(mediaQuery);
+    }
+  }
+
+  void visitKeyFrameDirective(KeyFrameDirective node) {
+    visitIdentifier(node.name);
+    _visitNodeList(node._blocks);
+  }
+
+  void visitKeyFrameBlock(KeyFrameBlock node) {
+    visitExpressions(node._blockSelectors);
+    visitDeclarationGroup(node._declarations);
+  }
+
+  void visitFontFaceDirective(FontFaceDirective node) {
+    visitDeclarationGroup(node._declarations);
+  }
+
+  void visitStyletDirective(StyletDirective node) {
+    _visitNodeList(node.rulesets);
+  }
+
+  void visitNamespaceDirective(NamespaceDirective node) {}
+
+  void visitVarDefinitionDirective(VarDefinitionDirective node) {
+    visitVarDefinition(node.def);
+  }
+
+  void visitMixinRulesetDirective(MixinRulesetDirective node) {
+    _visitNodeList(node.rulesets);
+  }
+
+  void visitMixinDefinition(MixinDefinition node) {}
+
+  void visitMixinDeclarationDirective(MixinDeclarationDirective node) {
+    visitDeclarationGroup(node.declarations);
+  }
+
+  void visitIncludeDirective(IncludeDirective node) {
+    for (var index = 0; index < node.args.length; index++) {
+      var param = node.args[index];
+      _visitNodeList(param);
+    }
+  }
+
+  void visitContentDirective(ContentDirective node) {
+    // TODO(terry): TBD
+  }
+
+  void visitRuleSet(RuleSet node) {
+    visitSelectorGroup(node._selectorGroup);
+    visitDeclarationGroup(node._declarationGroup);
+  }
+
+  void visitDeclarationGroup(DeclarationGroup node) {
+    _visitNodeList(node.declarations);
+  }
+
+  void visitMarginGroup(MarginGroup node) => visitDeclarationGroup(node);
+
+  void visitDeclaration(Declaration node) {
+    visitIdentifier(node._property);
+    if (node._expression != null) node._expression.visit(this);
+  }
+
+  void visitVarDefinition(VarDefinition node) {
+    visitIdentifier(node._property);
+    if (node._expression != null) node._expression.visit(this);
+  }
+
+  void visitIncludeMixinAtDeclaration(IncludeMixinAtDeclaration node) {
+    visitIncludeDirective(node.include);
+  }
+
+  void visitExtendDeclaration(ExtendDeclaration node) {
+    _visitNodeList(node.selectors);
+  }
+
+  void visitSelectorGroup(SelectorGroup node) {
+    _visitNodeList(node.selectors);
+  }
+
+  void visitSelector(Selector node) {
+    _visitNodeList(node.simpleSelectorSequences);
+  }
+
+  void visitSimpleSelectorSequence(SimpleSelectorSequence node) {
+    node.simpleSelector.visit(this);
+  }
+
+  void visitSimpleSelector(SimpleSelector node) => node._name.visit(this);
+
+  void visitNamespaceSelector(NamespaceSelector node) {
+    if (node._namespace != null) node._namespace.visit(this);
+    if (node.nameAsSimpleSelector != null) {
+      node.nameAsSimpleSelector.visit(this);
+    }
+  }
+
+  void visitElementSelector(ElementSelector node) => visitSimpleSelector(node);
+
+  void visitAttributeSelector(AttributeSelector node) {
+    visitSimpleSelector(node);
+  }
+
+  void visitIdSelector(IdSelector node) => visitSimpleSelector(node);
+
+  void visitClassSelector(ClassSelector node) => visitSimpleSelector(node);
+
+  void visitPseudoClassSelector(PseudoClassSelector node) =>
+      visitSimpleSelector(node);
+
+  void visitPseudoElementSelector(PseudoElementSelector node) =>
+      visitSimpleSelector(node);
+
+  void visitPseudoClassFunctionSelector(PseudoClassFunctionSelector node) =>
+      visitSimpleSelector(node);
+
+  void visitPseudoElementFunctionSelector(PseudoElementFunctionSelector node) =>
+      visitSimpleSelector(node);
+
+  void visitNegationSelector(NegationSelector node) =>
+      visitSimpleSelector(node);
+
+  void visitSelectorExpression(SelectorExpression node) {
+    _visitNodeList(node.expressions);
+  }
+
+  void visitUnicodeRangeTerm(UnicodeRangeTerm node) {}
+
+  void visitLiteralTerm(LiteralTerm node) {}
+
+  void visitHexColorTerm(HexColorTerm node) {}
+
+  void visitNumberTerm(NumberTerm node) {}
+
+  void visitUnitTerm(UnitTerm node) {}
+
+  void visitLengthTerm(LengthTerm node) {
+    visitUnitTerm(node);
+  }
+
+  void visitPercentageTerm(PercentageTerm node) {
+    visitLiteralTerm(node);
+  }
+
+  void visitEmTerm(EmTerm node) {
+    visitLiteralTerm(node);
+  }
+
+  void visitExTerm(ExTerm node) {
+    visitLiteralTerm(node);
+  }
+
+  void visitAngleTerm(AngleTerm node) {
+    visitUnitTerm(node);
+  }
+
+  void visitTimeTerm(TimeTerm node) {
+    visitUnitTerm(node);
+  }
+
+  void visitFreqTerm(FreqTerm node) {
+    visitUnitTerm(node);
+  }
+
+  void visitFractionTerm(FractionTerm node) {
+    visitLiteralTerm(node);
+  }
+
+  void visitUriTerm(UriTerm node) {
+    visitLiteralTerm(node);
+  }
+
+  void visitResolutionTerm(ResolutionTerm node) {
+    visitUnitTerm(node);
+  }
+
+  void visitChTerm(ChTerm node) {
+    visitUnitTerm(node);
+  }
+
+  void visitRemTerm(RemTerm node) {
+    visitUnitTerm(node);
+  }
+
+  void visitViewportTerm(ViewportTerm node) {
+    visitUnitTerm(node);
+  }
+
+  void visitFunctionTerm(FunctionTerm node) {
+    visitLiteralTerm(node);
+    visitExpressions(node._params);
+  }
+
+  void visitGroupTerm(GroupTerm node) {
+    for (var term in node._terms) {
+      term.visit(this);
+    }
+  }
+
+  void visitItemTerm(ItemTerm node) {
+    visitNumberTerm(node);
+  }
+
+  void visitIE8Term(IE8Term node) {}
+
+  void visitOperatorSlash(OperatorSlash node) {}
+
+  void visitOperatorComma(OperatorComma node) {}
+
+  void visitOperatorPlus(OperatorPlus node) {}
+
+  void visitOperatorMinus(OperatorMinus node) {}
+
+  void visitVarUsage(VarUsage node) {
+    _visitNodeList(node.defaultValues);
+  }
+
+  void visitExpressions(Expressions node) {
+    _visitNodeList(node.expressions);
+  }
+
+  void visitBinaryExpression(BinaryExpression node) {
+    // TODO(terry): TBD
+    throw UnimplementedError;
+  }
+
+  void visitUnaryExpression(UnaryExpression node) {
+    // TODO(terry): TBD
+    throw UnimplementedError;
+  }
+
+  void visitIdentifier(Identifier node) {}
+
+  void visitWildcard(Wildcard node) {}
+
+  void visitThisOperator(ThisOperator node) {}
+
+  void visitNegation(Negation node) {}
+
+  void visitDartStyleExpression(DartStyleExpression node) {}
+
+  void visitFontExpression(FontExpression node) {
+    // TODO(terry): TBD
+    throw UnimplementedError;
+  }
+
+  void visitBoxExpression(BoxExpression node) {
+    // TODO(terry): TBD
+    throw UnimplementedError;
+  }
+
+  void visitMarginExpression(MarginExpression node) {
+    // TODO(terry): TBD
+    throw UnimplementedError;
+  }
+
+  void visitBorderExpression(BorderExpression node) {
+    // TODO(terry): TBD
+    throw UnimplementedError;
+  }
+
+  void visitHeightExpression(HeightExpression node) {
+    // TODO(terry): TB
+    throw UnimplementedError;
+  }
+
+  void visitPaddingExpression(PaddingExpression node) {
+    // TODO(terry): TBD
+    throw UnimplementedError;
+  }
+
+  void visitWidthExpression(WidthExpression node) {
+    // TODO(terry): TBD
+    throw UnimplementedError;
+  }
+}