[Mac] First part of Omnibox decoration refactor. Enable ev bubble.

chrome/browser/cocoa/location_bar/selected_keyword_decoration.h

Index: chrome/browser/cocoa/location_bar/selected_keyword_decoration.h
diff --git a/chrome/browser/cocoa/location_bar/selected_keyword_decoration.h b/chrome/browser/cocoa/location_bar/selected_keyword_decoration.h
new file mode 100644
index 0000000000000000000000000000000000000000..8df3ed77240cbe6da2f77fec52decd6630838538
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+++ b/chrome/browser/cocoa/location_bar/selected_keyword_decoration.h
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+// Copyright (c) 2010 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_COCOA_LOCATION_BAR_SELECTED_KEYWORD_DECORATION_H_
+#define CHROME_BROWSER_COCOA_LOCATION_BAR_SELECTED_KEYWORD_DECORATION_H_
+
+#include <string>
+
+#import <Cocoa/Cocoa.h>
+
+#include "chrome/browser/cocoa/location_bar/bubble_decoration.h"
+
+class SelectedKeywordDecoration : public BubbleDecoration {
+ public:
+  SelectedKeywordDecoration(NSFont* font);
+
+  // Calculates appropriate full and partial label strings based on
+  // inputs.
+  void SetKeyword(const std::wstring& keyword, bool is_extension_keyword);
+
+  // Determines what combination of labels and image will best fit
+  // within |width|, makes those current for |BubbleDecoration|, and
+  // return the resulting width.
+  virtual CGFloat GetWidthForSpace(CGFloat width);
+
+ private:
+  friend class SelectedKeywordDecorationTest;
+  FRIEND_TEST_ALL_PREFIXES(SelectedKeywordDecorationTest,
+                           UsesPartialKeywordIfNarrow);
+
+  scoped_nsobject<NSImage> search_image_;
+  scoped_nsobject<NSString> full_string_;
+  scoped_nsobject<NSString> partial_string_;
+
+  DISALLOW_COPY_AND_ASSIGN(SelectedKeywordDecoration);
+};
+
+#endif  // CHROME_BROWSER_COCOA_LOCATION_BAR_SELECTED_KEYWORD_DECORATION_H_