gzip chrome://tracing resources.

content/browser/tracing/tracing_ui.cc

Index: content/browser/tracing/tracing_ui.cc
diff --git a/content/browser/tracing/tracing_ui.cc b/content/browser/tracing/tracing_ui.cc
index 7943d902f083f3e4044cf5f92b32e5397427a49e..3e213e73e5b20f3314a928e507c40e7009264918 100644
--- a/content/browser/tracing/tracing_ui.cc
+++ b/content/browser/tracing/tracing_ui.cc
@@ -240,6 +240,13 @@ TracingUI::TracingUI(WebUI* web_ui)
       web_ui->GetWebContents()->GetBrowserContext();
 
   WebUIDataSource* source = WebUIDataSource::Create(kChromeUITracingHost);
+  std::unordered_set<std::string> exclusions;
+  exclusions.insert("json/begin_recording");
+  exclusions.insert("json/categories");
+  exclusions.insert("json/end_recording_compressed");
+  exclusions.insert("json/get_buffer_percent_full");
+  exclusions.insert("json/get_buffer_status");
+  source->UseGzip(exclusions);
   source->SetJsonPath("strings.js");
   source->SetDefaultResource(IDR_TRACING_HTML);
   source->AddResourcePath("tracing.js", IDR_TRACING_JS);