Use whether a query is from the app list to determine the RLZ parameter.

chrome/browser/search_engines/template_url.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_SEARCH_ENGINES_TEMPLATE_URL_H_
 #define CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_H_
 
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 115 matching lines @@
     GURL image_url;
 
     // When searching for an image, the original size of the image.
     gfx::Size image_original_size;
 
     // If set, ReplaceSearchTerms() will append a param to the TemplateURLRef to
     // update the search results page incrementally even if that is otherwise
     // disabled by google.com preferences. See comments on
     // chrome::ForceInstantResultsParam().
     bool force_instant_results;
+
+    // True if the search was made using the app list search box. Otherwise, the
+    // search was made using the omnibox.
+    bool from_app_list;
   };
 
   TemplateURLRef(TemplateURL* owner, Type type);
   TemplateURLRef(TemplateURL* owner, size_t index_in_owner);
   ~TemplateURLRef();
 
   // Returns the raw URL. None of the parameters will have been replaced.
   std::string GetURL() const;
 
   // Returns the raw string of the post params. Please see comments in
@@ skipping 615 matching lines @@
   TemplateURLRef image_url_ref_;
   TemplateURLRef new_tab_url_ref_;
   scoped_ptr<AssociatedExtensionInfo> extension_info_;
 
   // TODO(sky): Add date last parsed OSD file.
 
   DISALLOW_COPY_AND_ASSIGN(TemplateURL);
 };
 
 #endif  // CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_H_