Remove verbose logging in local unique font matching on Linux

Fixed: 1005508
Change-Id: I97f5340c6d1881798ba51effc4a9e5c07de12e52
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2023552
Commit-Queue: Dominik Röttsches <drott@chromium.org>
Commit-Queue: Kentaro Hara <haraken@chromium.org>
Auto-Submit: Dominik Röttsches <drott@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#735854}

content/child/child_process_sandbox_support_impl_linux.cc

@@ -76,8 +76,6 @@ bool WebSandboxSupportLinux::MatchFontByPostscriptNameOrFullFontName(
   std::string family_name;
   if (!font_loader_->MatchFontByPostscriptNameOrFullFontName(font_unique_name,
                                                              &font_identity)) {
-    LOG(ERROR) << "FontService unique font name matching request did not "
-                  "receive a response.";
     return false;
   }