content_shell: Fix a regression for paths starting with /media/.

content/shell/renderer/layout_test/blink_test_runner.cc

Index: content/shell/renderer/layout_test/blink_test_runner.cc
diff --git a/content/shell/renderer/layout_test/blink_test_runner.cc b/content/shell/renderer/layout_test/blink_test_runner.cc
index 9673cf4cbc2642575dcb88af38f11e5e237ef0d8..f5aae4f81de2295e5ffd14ce323c5ad10d8835b0 100644
--- a/content/shell/renderer/layout_test/blink_test_runner.cc
+++ b/content/shell/renderer/layout_test/blink_test_runner.cc
@@ -213,6 +213,8 @@ WebURL RewriteAbsolutePathInWPT(const std::string& utf8_url) {
   const int kFileSchemeLen = arraysize(kFileScheme) - 1;
   if (utf8_url.compare(0, kFileSchemeLen, kFileScheme, kFileSchemeLen) != 0)
     return WebURL();
+  if (utf8_url.find("/LayoutTests/") != std::string::npos)
+    return WebURL();
 #if defined(OS_WIN)
   // +3 for a drive letter, :, and /.
   const int kFileSchemeAndDriveLen = kFileSchemeLen + 3;