Log a warning if we try to load a URL longer than kMaxURLChars.

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 471e056e8f341b1a20c801211639f604480d67a0..96349e0978dca35c32764d58c425145903d7f5eb 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -1763,8 +1763,11 @@ bool WebContentsImpl::NavigateToEntry(
 
   // The renderer will reject IPC messages with URLs longer than
   // this limit, so don't attempt to navigate with a longer URL.
-  if (entry.GetURL().spec().size() > kMaxURLChars)
+  if (entry.GetURL().spec().size() > kMaxURLChars) {
+    LOG(WARNING) << "Refusing to load URL as it exceeds " << kMaxURLChars
+                 << " characters.";
     return false;
+  }
 
   RenderViewHostImpl* dest_render_view_host =
       static_cast<RenderViewHostImpl*>(render_manager_.Navigate(entry));