Revert 74236 - Mac: Turn on tab overview mode by default.

chrome/browser/about_flags.cc

 // Copyright (c) 2011 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.
 
 #include "chrome/browser/about_flags.h"
 
 #include <algorithm>
 #include <iterator>
 #include <map>
 #include <set>
@@ skipping 63 matching lines @@
 //   macro for this type supplying the command line to the macro.
 // . MULTI_VALUE: a list of choices, the first of which should correspond to a
 //   deactivated state for this lab (i.e. no command line option).  To specify
 //   this type of experiment use the macro MULTI_VALUE_TYPE supplying it the
 //   array of choices.
 // See the documentation of Experiment for details on the fields.
 //
 // When adding a new choice, add it to the end of the list.
 const Experiment kExperiments[] = {
   {
+    "expose-for-tabs",  // FLAGS:RECORD_UMA
+    IDS_FLAGS_TABPOSE_NAME,
+    IDS_FLAGS_TABPOSE_DESCRIPTION,
+    kOsMac,
+#if defined(OS_MACOSX)
+    // The switch exists only on OS X.
+    SINGLE_VALUE_TYPE(switches::kEnableExposeForTabs)
+#else
+    SINGLE_VALUE_TYPE("")
+#endif
+  },
+  {
     kMediaPlayerExperimentName,
     IDS_FLAGS_MEDIA_PLAYER_NAME,
     IDS_FLAGS_MEDIA_PLAYER_DESCRIPTION,
     kOsCrOS,
 #if defined(OS_CHROMEOS)
     // The switch exists only on Chrome OS.
     SINGLE_VALUE_TYPE(switches::kEnableMediaPlayer)
 #else
     SINGLE_VALUE_TYPE("")
 #endif
@@ skipping 606 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags