Adding Javascript support for the Extended Searchbox API.

chrome/common/instant_types.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_COMMON_INSTANT_TYPES_H_
 #define CHROME_COMMON_INSTANT_TYPES_H_
 
+#include "base/string16.h"
+#include "googleurl/src/gurl.h"
+
 // Ways that the Instant suggested text is autocompleted into the omnibox.
 enum InstantCompleteBehavior {
   // Autocomplete the suggestion immediately.
   INSTANT_COMPLETE_NOW,
 
   // Autocomplete the suggestion after a delay.
   INSTANT_COMPLETE_DELAYED,
 
   // Do not autocomplete the suggestion. The suggestion may still be displayed
   // in the omnibox, but not made a part of the omnibox text by default (e.g.,
   // by displaying the suggestion as non-highlighted, non-selected gray text).
   INSTANT_COMPLETE_NEVER,
+
+  // Treat the suggested text as the entire omnibox text, effectively replacing
+  // whatever the user has typed.
+  INSTANT_COMPLETE_REPLACE,
+};
+
+// The type of suggestion provided by Instant. For example, if Instant suggests
+// "yahoo.com", should that be considered a search string or a URL?
+enum InstantSuggestionType {
+  INSTANT_SUGGESTION_SEARCH,
+  INSTANT_SUGGESTION_URL,
+};
+
+// A wrapper to hold Instant suggested text and its metadata such as the type
+// of the suggestion and what completion behavior should be applied to it.
+struct InstantSuggestion {
+  InstantSuggestion();
+  InstantSuggestion(const string16& text,
+                    InstantCompleteBehavior behavior,
+                    InstantSuggestionType type);
+  ~InstantSuggestion();
+  void Clear();

[sky, 2012/08/14 17:10:10]

newline between 43/44 and add a description. That said, is there really a reason
for Clear? Since this class supports copy semantics you just do:
suggestion = InstantSuggestion();

[Shishir, 2012/08/14 17:30:19]

Removed the clear method.

+
+  string16 text;
+  InstantCompleteBehavior behavior;
+  InstantSuggestionType type;
+};
+
+// Omnibox dropdown matches provided by the native autocomplete providers.
+struct InstantAutocompleteResult {
+  InstantAutocompleteResult();
+  ~InstantAutocompleteResult();
+
+  // The provider name. May be empty.
+  string16 provider;
+
+  // True iff this is a search suggestion.
+  bool is_search;
+
+  // The title of the match.
+  string16 contents;
+
+  // The URL of the match.
+  // TODO(dhollowa): Remove this once the privacy story is sorted out.
+  GURL destination_url;
+
+  // The relevance score of this match. Same as the relevance score stored in
+  // AutocompleteMatch.
+  int relevance;
+};
+
+// How to interpret the size (height or width) of the Instant overlay (preview).
+enum InstantSizeUnits {
+  // As an absolute number of pixels.
+  INSTANT_SIZE_PIXELS,
+
+  // As a percentage of the height or width of the containing (parent) view.
+  INSTANT_SIZE_PERCENT,
 };
 
 #endif  // CHROME_COMMON_INSTANT_TYPES_H_