Prune the old deploy code. This CL does a few changes:

pkg/polymer/lib/src/css_analyzer.dart

Index: pkg/polymer/lib/src/css_analyzer.dart
diff --git a/pkg/polymer/lib/src/css_analyzer.dart b/pkg/polymer/lib/src/css_analyzer.dart
index 270af5d5ba0c6a4485298097a3e67c948cd70c94..a6c197b558794755d3e31cc477f0c1ce9da756e3 100644
--- a/pkg/polymer/lib/src/css_analyzer.dart
+++ b/pkg/polymer/lib/src/css_analyzer.dart
@@ -15,17 +15,16 @@ import 'files.dart' show SourceFile;
 import 'messages.dart';
 import 'compiler_options.dart';
 
-void analyzeCss(String packageRoot, List<SourceFile> files,
+void analyzeCss(List<SourceFile> files,
                 Map<String, FileInfo> info, Map<String, String> pseudoElements,
                 Messages messages, {warningsAsErrors: false}) {
-  var analyzer = new _AnalyzerCss(packageRoot, info, pseudoElements, messages,
+  var analyzer = new _AnalyzerCss(info, pseudoElements, messages,
       warningsAsErrors);
   for (var file in files) analyzer.process(file);
   analyzer.normalize();
 }
 
 class _AnalyzerCss {
-  final String packageRoot;
   final Map<String, FileInfo> info;
   final Map<String, String> _pseudoElements;
   final Messages _messages;
@@ -38,7 +37,7 @@ class _AnalyzerCss {
    * CSS pseudo-elements 'name::custom-element' is mapped to the manged name
    * associated with the pseudo-element key.
    */
-  _AnalyzerCss(this.packageRoot, this.info, this._pseudoElements,
+  _AnalyzerCss(this.info, this._pseudoElements,
                this._messages, this._warningsAsErrors);
 
   /**
@@ -137,8 +136,7 @@ class _AnalyzerCss {
         seen.add(styleSheet);
 
         // Any other imports in this stylesheet?
-        var urlInfos = findImportsInStyleSheet(styleSheet, packageRoot,
-            inputUrl, _messages);
+        var urlInfos = findImportsInStyleSheet(styleSheet, inputUrl, _messages);
 
         // Process other imports in this stylesheets.
         for (var importSS in urlInfos) {
@@ -149,8 +147,7 @@ class _AnalyzerCss {
             // Find dependencies for stylesheet referenced with a
             // @import
             for (var ss in importInfo.styleSheets) {
-              var urls = findImportsInStyleSheet(ss, packageRoot, inputUrl,
-                  _messages);
+              var urls = findImportsInStyleSheet(ss, inputUrl, _messages);
               for (var url in urls) {
                 _dependencies(info[url.resolvedPath], seen: seen);
               }
@@ -359,8 +356,8 @@ class _PseudoElementExpander extends Visitor {
 }
 
 List<UrlInfo> findImportsInStyleSheet(StyleSheet styleSheet,
-    String packageRoot, UrlInfo inputUrl, Messages messages) {
-  var visitor = new _CssImports(packageRoot, inputUrl, messages);
+    UrlInfo inputUrl, Messages messages) {
+  var visitor = new _CssImports(inputUrl, messages);
   visitor.visitTree(styleSheet);
   return visitor.urlInfos;
 }
@@ -370,8 +367,6 @@ List<UrlInfo> findImportsInStyleSheet(StyleSheet styleSheet,
  * return a list of all fully qualified CSS files.
  */
 class _CssImports extends Visitor {
-  final String packageRoot;
-
   /** Input url of the css file, used to normalize relative import urls. */
   final UrlInfo inputUrl;
 
@@ -380,7 +375,7 @@ class _CssImports extends Visitor {
 
   final Messages _messages;
 
-  _CssImports(this.packageRoot, this.inputUrl, this._messages);
+  _CssImports(this.inputUrl, this._messages);
 
   void visitTree(StyleSheet tree) {
     visitStyleSheet(tree);
@@ -388,7 +383,7 @@ class _CssImports extends Visitor {
 
   void visitImportDirective(ImportDirective node) {
     var urlInfo = UrlInfo.resolve(node.import, inputUrl,
-        node.span, packageRoot, _messages, ignoreAbsolute: true);
+        node.span, _messages, ignoreAbsolute: true);
     if (urlInfo == null) return;
     urlInfos.add(urlInfo);
   }
@@ -456,18 +451,16 @@ VarDefinition _findTerminalVarDefinition(Map<String, VarDefinition> varDefs,
  * component's element tag.
  */
 List<UrlInfo> findUrlsImported(LibraryInfo info, UrlInfo inputUrl,
-    String packageRoot, Node node, Messages messages, CompilerOptions options) {
+    Node node, Messages messages, CompilerOptions options) {
   // Process any @imports inside of the <style> tag.
   var styleProcessor =
-      new _CssStyleTag(packageRoot, info, inputUrl, messages, options);
+      new _CssStyleTag(info, inputUrl, messages, options);
   styleProcessor.visit(node);
   return styleProcessor.imports;
 }
 
 /* Process CSS inside of a style tag. */
 class _CssStyleTag extends TreeVisitor {
-  final String _packageRoot;
-
   /** Either a FileInfo or ComponentInfo. */
   final LibraryInfo _info;
   final Messages _messages;
@@ -482,7 +475,7 @@ class _CssStyleTag extends TreeVisitor {
   /** List of @imports found. */
   List<UrlInfo> imports = [];
 
-  _CssStyleTag(this._packageRoot, this._info, this._inputUrl, this._messages,
+  _CssStyleTag(this._info, this._inputUrl, this._messages,
       this._options);
 
   void visitElement(Element node) {
@@ -497,7 +490,7 @@ class _CssStyleTag extends TreeVisitor {
         _info.styleSheets.add(styleSheet);
 
         // Find all imports return list of @imports in this style tag.
-        var urlInfos = findImportsInStyleSheet(styleSheet, _packageRoot,
+        var urlInfos = findImportsInStyleSheet(styleSheet,
             _inputUrl, _messages);
         imports.addAll(urlInfos);
       }