chromium_build_stats: fix trace viewer

appengine/chromium_build_stats/gopath/src/ninjalog/traceviewer/traceviewer.go

Index: appengine/chromium_build_stats/gopath/src/ninjalog/traceviewer/traceviewer.go
diff --git a/appengine/chromium_build_stats/gopath/src/ninjalog/traceviewer/traceviewer.go b/appengine/chromium_build_stats/gopath/src/ninjalog/traceviewer/traceviewer.go
index e532ec2428209d536f46d3e094327599c66d0945..fdc5939a665404aad9099ba9e2affc5e92c59e66 100644
--- a/appengine/chromium_build_stats/gopath/src/ninjalog/traceviewer/traceviewer.go
+++ b/appengine/chromium_build_stats/gopath/src/ninjalog/traceviewer/traceviewer.go
@@ -76,7 +76,7 @@ func (t *Template) HTML(fname string, traces []ninjalog.Trace) ([]byte, error) {
 	scanner := bufio.NewScanner(f)
 	for scanner.Scan() {
 		line := scanner.Text()
-		if line == `<script id="viewer-data" type="application/json">` {
+		if line == `<script id="viewer-data" type="text/plain">` {
 			fmt.Fprintf(&w, "%s\n", line)
 			break
 		}