Coverity: Fix several pass-by-values.

content/renderer/renderer_main_platform_delegate_win.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/renderer_main_platform_delegate.h"
 
 #include <signal.h>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 47 matching lines @@
     if (!::CloseWindowStation(winsta0)) {
       // We might be leaking a winsta0 handle.  This is a security risk, but
       // since we allow fail over to no desktop protection in low memory
       // condition, this is not a big risk.
       NOTREACHED();
     }
   }
 }
 
 // Windows-only skia sandbox support
-void SkiaPreCacheFont(LOGFONT logfont) {
+void SkiaPreCacheFont(const LOGFONT& logfont) {
   content::RenderThread* render_thread = content::RenderThread::Get();
   if (render_thread) {
     render_thread->PreCacheFont(logfont);
   }
 }
 
 void __cdecl ForceCrashOnSigAbort(int) {
   *((int*)0) = 0x1337;
 }
 
@@ skipping 100 matching lines @@
                                                           kRenderTestCall));
     DCHECK(run_security_tests);
     if (run_security_tests) {
       int test_count = 0;
       DVLOG(1) << "Running renderer security tests";
       BOOL result = run_security_tests(&test_count);
       CHECK(result) << "Test number " << test_count << " has failed.";
     }
   }
 }