Convert JsonWriter::Write to taking a const ref for the in-param

android_webview/browser/aw_dev_tools_discovery_provider.cc

Index: android_webview/browser/aw_dev_tools_discovery_provider.cc
diff --git a/android_webview/browser/aw_dev_tools_discovery_provider.cc b/android_webview/browser/aw_dev_tools_discovery_provider.cc
index 4117358f3c14cfa042ab67250c798b9adb2e2267..fe1e61e8cf87fca6cc21250314995b40583471c3 100644
--- a/android_webview/browser/aw_dev_tools_discovery_provider.cc
+++ b/android_webview/browser/aw_dev_tools_discovery_provider.cc
@@ -35,7 +35,7 @@ std::string GetViewDescription(WebContents* web_contents) {
     description.SetInteger("height", screen_rect.height());
   }
   std::string json;
-  base::JSONWriter::Write(&description, &json);
+  base::JSONWriter::Write(description, &json);
   return json;
 }