tracing: Stream processing for some importers

tracing/tracing/extras/importer/gzip_importer_test.html

Index: tracing/tracing/extras/importer/gzip_importer_test.html
diff --git a/tracing/tracing/extras/importer/gzip_importer_test.html b/tracing/tracing/extras/importer/gzip_importer_test.html
index 92816cb61986d444069eaa984b9b1320882d06d4..4ff8f05c6722621647f52d138b43aef98f33b4e8 100644
--- a/tracing/tracing/extras/importer/gzip_importer_test.html
+++ b/tracing/tracing/extras/importer/gzip_importer_test.html
@@ -6,6 +6,7 @@ found in the LICENSE file.
 -->
 
 <link rel="import" href="/tracing/base/base64.html">
+<link rel="import" href="/tracing/base/trace_stream.html">
 <link rel="import" href="/tracing/core/test_utils.html">
 <link rel="import" href="/tracing/extras/importer/gzip_importer.html">
 <link rel="import" href="/tracing/extras/importer/trace_event_importer.html">
@@ -35,7 +36,8 @@ tr.b.unittest.testSuite(function() {
     var gzipData = Base64.atob(GZIP_DATA_BASE_64);
     var importer = new tr.e.importer.GzipImporter(null, gzipData);
     assert.isTrue(tr.e.importer.GzipImporter.canImport(gzipData));
-    assert.strictEqual(importer.extractSubtraces()[0], ORIGINAL_DATA);
+    assert.strictEqual(
+        importer.extractSubtraces()[0].toString(), ORIGINAL_DATA);
   });
 
   test('inflateArrayBuffer', function() {
@@ -48,7 +50,8 @@ tr.b.unittest.testSuite(function() {
     }
     var importer = new tr.e.importer.GzipImporter(null, buffer);
     assert.isTrue(tr.e.importer.GzipImporter.canImport(buffer));
-    assert.strictEqual(importer.extractSubtraces()[0], ORIGINAL_DATA);
+    assert.strictEqual(
+        importer.extractSubtraces()[0].toString(), ORIGINAL_DATA);
   });
 
   test('import', function() {