Propagate the search request params from the browser to the Instant search base page to fix the embe

chrome/common/instant_types.h

 // Copyright 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 <string>
 #include <utility>
 
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   // The title of the Most Visited page.  May be empty, in which case the |url|
   // is used as the title.
   base::string16 title;
 };
 
 // An InstantMostVisitedItem along with its assigned restricted ID.
 typedef std::pair<InstantRestrictedID, InstantMostVisitedItem>
     InstantMostVisitedItemIDPair;
 
+// Embedded search request logging stats params.
+extern const char kSearchQueryKey[];
+extern const char kOriginalQueryKey[];
+extern const char kRLZParameterKey[];
+extern const char kInputEncodingKey[];
+extern const char kAssistedQueryStatsKey[];
+
+// A wrapper to hold embedded search request params. Used to tell the server
+// about the search query logging stats at the query submission time.
+struct EmbeddedSearchRequestParams {
+  EmbeddedSearchRequestParams();
+  // Extracts the request params from the |url| and initializes the member
+  // variables.
+  explicit EmbeddedSearchRequestParams(const GURL& url);
+  ~EmbeddedSearchRequestParams();
+
+  // Submitted search query.
+  base::string16 search_query;
+
+  // User typed query.
+  base::string16 original_query;
+
+  // RLZ parameter.
+  base::string16 rlz_parameter_value;
+
+  // Character input encoding type.
+  base::string16 input_encoding;
+
+  // The optional assisted query stats, aka AQS, used for logging purposes.
+  // This string contains impressions of all autocomplete matches shown
+  // at the query submission time.  For privacy reasons, we require the
+  // search provider to support HTTPS protocol in order to receive the AQS
+  // param.
+  // For more details, see http://goto.google.com/binary-clients-logging.
+  base::string16 assisted_query_stats;
+};
 #endif  // CHROME_COMMON_INSTANT_TYPES_H_