misc/trace: update trace viewer

Update to tip to fix #11003 (not possible to select events in chromium).
Fixed #11003

Change-Id: Ibba5d39ca809cfd5cb79c9e6d152b00899d49e08
Reviewed-on: https://go-review.googlesource.com/11062Reviewed-by: Andrew Gerrand <adg@golang.org>

misc/trace/README.md

@@ -2,9 +2,10 @@ This directory contains helper file for trace viewer (`go tool trace`).
 
 `trace_viewer_lean.html` was generated by following
 [instructions](https://github.com/google/trace-viewer/wiki/Embedding)
-on revision `895aa74558d19d91906fb720df6458244ef160c6` using:
+on revision `3c695b420a09db9933686fa958f1765c373c372e` using:
 ```
 trace-viewer$ ./vulcanize_trace_viewer --config=lean
+trace-viewer$ cp bin/trace_viewer_lean.html $GOROOT/misc/trace/
 ```
 
 The license for trace-viewer is as follows:

src/cmd/trace/trace.go

@@ -49,7 +49,7 @@ var templTrace = `
 		<link href="/trace_viewer_html" rel="import">
 		<script>
 			document.addEventListener("DOMContentLoaded", function(event) {
-				var viewer = new tv.TraceViewer('/jsontrace{{PARAMS}}');
+				var viewer = new tr.TraceViewer('/jsontrace{{PARAMS}}');
 				document.body.appendChild(viewer);
 			});
 		</script>