Revert of Migrate TestCommon to Chromium c++ style and remove un-used header.

content/shell/renderer/test_runner/TestCommon.cpp

Index: content/shell/renderer/test_runner/TestCommon.cpp
diff --git a/content/shell/renderer/test_runner/TestCommon.cpp b/content/shell/renderer/test_runner/TestCommon.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..a4976a0eed0b120429995bae8bf9494cfb53e472
--- /dev/null
+++ b/content/shell/renderer/test_runner/TestCommon.cpp
@@ -0,0 +1,35 @@
+// Copyright 2013 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/shell/renderer/test_runner/TestCommon.h"
+
+namespace content {
+
+namespace {
+
+const char layoutTestsPattern[] = "/LayoutTests/";
+const std::string::size_type layoutTestsPatternSize = sizeof(layoutTestsPattern) - 1;
+const char fileUrlPattern[] = "file:/";
+const char fileTestPrefix[] = "(file test):";
+const char dataUrlPattern[] = "data:";
+const std::string::size_type dataUrlPatternSize = sizeof(dataUrlPattern) - 1;
+
+}  // namespace
+
+std::string normalizeLayoutTestURL(const std::string& url)
+{
+    std::string result = url;
+    size_t pos;
+    if (!url.find(fileUrlPattern) && ((pos = url.find(layoutTestsPattern)) != std::string::npos)) {
+        // adjust file URLs to match upstream results.
+        result.replace(0, pos + layoutTestsPatternSize, fileTestPrefix);
+    } else if (!url.find(dataUrlPattern)) {
+        // URL-escape data URLs to match results upstream.
+        std::string path = url.substr(dataUrlPatternSize);
+        result.replace(dataUrlPatternSize, url.length(), path);
+    }
+    return result;
+}
+
+}  // namespace content