Add core plumbing for Instant Extended work

chrome/browser/ui/search/search_ui.h

+// 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.
+
+#ifndef CHROME_BROWSER_UI_SEARCH_SEARCH_UI_H_
+#define CHROME_BROWSER_UI_SEARCH_SEARCH_UI_H_
+#pragma once
+
+#include "third_party/skia/include/core/SkColor.h"
+
+namespace gfx {
+class Rect;
+class Size;
+}
+
+namespace chrome {
+namespace search {
+
+// Background color of the NTP.
+extern const SkColor kNTPBackgroundColor;
+
+// Color for the separator between results and the page.
+extern const SkColor kResultsSeparatorColor;
+
+// Background color for search results.
+extern const SkColor kSearchBackgroundColor;
+
+// Y-coordinate of the omnibox when over the page.
+extern const int kOmniboxYPosition;
+
+// Initial height of the search results.
+extern const int kSearchResultsHeight;
+
+// Get location of NTP omnibox in |web_contents_size|.  A height of 0 is
+// returned, it is platform-specific.
+gfx::Rect GetNTPOmniboxBounds(const gfx::Size& web_contents_size);
+
+}  // namespace search
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_UI_SEARCH_SEARCH_UI_H_