[Caja] Issue 711: default rewriter doesn't handle css @import

[mikesamuel]

Reviewers: felix8a,

Description:
Felix says:
    @import is supposed to be rewritten by InlineCssImportsStage, and
    there's a testsuite for it, but nothing actually instantiates that
    stage.

Dur.  Hooked it up.

Please review this at http://codereview.appspot.com/125043

Affected files:
  M     src/com/google/caja/plugin/PluginCompiler.java


Index: src/com/google/caja/plugin/PluginCompiler.java
===================================================================
--- src/com/google/caja/plugin/PluginCompiler.java      (revision 3747)
+++ src/com/google/caja/plugin/PluginCompiler.java      (working copy)
@@ -24,6 +24,7 @@
 import com.google.caja.plugin.stages.ConsolidateCodeStage;
 import com.google.caja.plugin.stages.DebuggingSymbolsStage;
 import com.google.caja.plugin.stages.InferFilePositionsStage;
+import com.google.caja.plugin.stages.InlineCssImportsStage;
 import com.google.caja.plugin.stages.OpenTemplateStage;
 import com.google.caja.plugin.stages.RewriteCssStage;
 import com.google.caja.plugin.stages.RewriteHtmlStage;
@@ -124,6 +125,7 @@

     List<Pipeline.Stage<Jobs>> stages = compilationPipeline.getStages();
     stages.add(new RewriteHtmlStage());
+    stages.add(new InlineCssImportsStage());
     stages.add(new SanitizeHtmlStage(htmlSchema));
     stages.add(new ValidateCssStage(cssSchema, htmlSchema));
     stages.add(new RewriteCssStage());