Don't run platform diagnostics tool on invalid URLs from the renderer.

chrome/browser/net/net_error_tab_helper.cc

Index: chrome/browser/net/net_error_tab_helper.cc
diff --git a/chrome/browser/net/net_error_tab_helper.cc b/chrome/browser/net/net_error_tab_helper.cc
index 02744df7c73585f6964c6bab8b39cb8a162c2f0d..636f6608725a10aedfed8c63b40f1c8b04c94568 100644
--- a/chrome/browser/net/net_error_tab_helper.cc
+++ b/chrome/browser/net/net_error_tab_helper.cc
@@ -262,7 +262,7 @@ void NetErrorTabHelper::SendInfo() {
 void NetErrorTabHelper::RunNetworkDiagnostics(const GURL& url) {
   // Only run diagnostics on HTTP or HTTPS URLs.  Shouldn't receive URLs with
   // any other schemes, but the renderer is not trusted.
-  if (!url.SchemeIsHTTPOrHTTPS())
+  if (!url.is_valid() || !url.SchemeIsHTTPOrHTTPS())
     return;
   // Sanitize URL prior to running diagnostics on it.
   RunNetworkDiagnosticsHelper(url.GetOrigin());