Move helper utilities for the DOM Distiller Viewer to core.

components/dom_distiller/core/viewer.h

Index: components/dom_distiller/core/viewer.h
diff --git a/components/dom_distiller/core/viewer.h b/components/dom_distiller/core/viewer.h
new file mode 100644
index 0000000000000000000000000000000000000000..61aac1481605c6839512b4173b30b2b2245f467a
--- /dev/null
+++ b/components/dom_distiller/core/viewer.h
@@ -0,0 +1,45 @@
+// 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.
+
+#ifndef COMPONENTS_DOM_DISTILLER_CORE_VIEWER_H_
+#define COMPONENTS_DOM_DISTILLER_CORE_VIEWER_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
+
+namespace dom_distiller {
+
+class DistilledArticleProto;
+class DomDistillerServiceInterface;
+class ViewerHandle;
+class ViewRequestDelegate;
+
+namespace viewer {
+
+// Returns a full HTML page based on the given |article_proto|. This is supposed
+// to displayed to the end user. The returned HTML should be considered unsafe,
+// so callers must ensure rendering it does not compromise Chrome.
+const std::string GetUnsafeHtml(const DistilledArticleProto* article_proto);
+
+// Returns a full HTML page which displays a generic error.
+const std::string GetErrorPageHtml();
+
+// Returns the default CSS to be used for a viewer.
+const std::string GetCss();
+
+// Based on the given path, calls into the DomDistillerServiceInterface for
+// viewing distilled content based on the |path|.
+scoped_ptr<ViewerHandle> CreateViewRequest(
+    DomDistillerServiceInterface* dom_distiller_service,
+    const std::string& path,
+    ViewRequestDelegate* view_request_delegate);
+
+}  // namespace viewer
+
+}  // namespace dom_distiller
+
+#endif  // COMPONENTS_DOM_DISTILLER_CORE_VIEWER_H_