Disable the embedded search field trials for users with themes.

chrome/browser/ui/search/search.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_H_
 #define CHROME_BROWSER_UI_SEARCH_SEARCH_H_
 
+#include <string>
+#include <utility>
+#include <vector>
+
 #include "base/basictypes.h"
 
 class Profile;
 
 namespace chrome {
 namespace search {
 
 // Returns whether the Instant extended API is enabled for the given |profile|.
 // |profile| may not be NULL.
-bool IsInstantExtendedAPIEnabled(const Profile* profile);
+bool IsInstantExtendedAPIEnabled(Profile* profile);
 
 // Returns the value to pass to the &espv cgi parameter when loading the
 // embedded search page from the user's default search provider.  Will be
 // 0 if the Instant Extended API is not enabled.
-uint64 EmbeddedSearchPageVersion(const Profile* profile);
+uint64 EmbeddedSearchPageVersion(Profile* profile);
 
 // Force the instant extended API to be enabled for tests.
 void EnableInstantExtendedAPIForTesting();
 
 // Returns whether query extraction is enabled.
-bool IsQueryExtractionEnabled(const Profile* profile);
+bool IsQueryExtractionEnabled(Profile* profile);
 
 // Force query extraction to be enabled for tests.
 void EnableQueryExtractionForTesting();
 
+// Type for a collection of experiment configuration parameters.
+typedef std::vector<std::pair<std::string, std::string> > FieldTrialFlags;
+
+// Given a field trial group name, parses out the group number and configuration
+// flags.
+// Exposed for testing only.
+void GetFieldTrialInfo(const std::string& group_name,
+                       FieldTrialFlags* flags,
+                       uint64* group_number);
+
+// Given a FieldTrialFlags object, returns the string value of the provided
+// flag.
+// Exposed for testing only.
+std::string GetStringValueForFlagWithDefault(
+    const std::string& flag,
+    const std::string& default_value,
+    FieldTrialFlags& flags);
+
+// Given a FieldTrialFlags object, returns the uint64 value of the provided
+// flag.
+// Exposed for testing only.
+uint64 GetUInt64ValueForFlagWithDefault(
+    const std::string& flag, uint64 default_value, FieldTrialFlags& flags);
+
+// Given a FieldTrialFlags object, returns the bool value of the provided flag.
+// Exposed for testing only.
+bool GetBoolValueForFlagWithDefault(
+    const std::string& flag, bool default_value, FieldTrialFlags& flags);
+
 }  // namespace search
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_UI_SEARCH_SEARCH_H_