tracing: Stream processing for some importers

tracing/tracing/mre/file_handle.html

Index: tracing/tracing/mre/file_handle.html
diff --git a/tracing/tracing/mre/file_handle.html b/tracing/tracing/mre/file_handle.html
index 9e04e55c0113eec5278726d43603aca91453b1b0..50b18385ddd3392943cde1a19720124c542648cc 100644
--- a/tracing/tracing/mre/file_handle.html
+++ b/tracing/tracing/mre/file_handle.html
@@ -54,6 +54,7 @@ tr.exportTo('tr.mre', function() {
     // TODO(eakuefner): assert startswith file://
     FileHandle.call(this, canonicalUrl);
     this.urlToLoad = urlToLoad;
+    this.loadAsTraceStream_ = false;
   }
 
   URLFileHandle.prototype = {
@@ -66,7 +67,7 @@ tr.exportTo('tr.mre', function() {
 
     load: function() {
       try {
-        return tr.b.getSync(this.urlToLoad);
+        return tr.b.getSync(this.urlToLoad, this.loadAsTraceStream_);
       } catch (ex) {
         var err = new Error('Could not open ' + this.urlToLoad);
         err.name = 'FileLoadingError';