Moving TestRunnerForSpecificView into a separate compilation unit.

components/test_runner/test_common.cc

 // Copyright 2014 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 "components/test_runner/test_common.h"
 
 #include <stddef.h>
 
 #include "base/lazy_instance.h"
 #include "base/macros.h"
@@ skipping 81 matching lines @@
       return kPolicyNewForegroundTab;
     case blink::WebNavigationPolicyNewWindow:
       return kPolicyNewWindow;
     case blink::WebNavigationPolicyNewPopup:
       return kPolicyNewPopup;
     default:
       return kIllegalString;
   }
 }
 
+blink::WebString V8StringToWebString(v8::Local<v8::String> v8_str) {
+  int length = v8_str->Utf8Length() + 1;
+  std::unique_ptr<char[]> chars(new char[length]);
+  v8_str->WriteUtf8(chars.get(), length);
+  return blink::WebString::fromUTF8(chars.get());
+}
+
 void EnsureBlinkInitialized() {
   g_mock_blink_platform.Get();
 }
 
 }  // namespace test_runner