Support for cros touchpad 3-finger click as middle button.

chrome/browser/prefs/command_line_pref_store.cc

 // 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.
 
 #include "chrome/browser/prefs/command_line_pref_store.h"
 
 #include <string>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 43 matching lines @@
       { switches::kDisableSSLFalseStart, prefs::kDisableSSLRecordSplitting,
           true },
       { switches::kEnableMemoryInfo, prefs::kEnableMemoryInfo, true },
 #if defined(GOOGLE_CHROME_BUILD)
       { switches::kDisablePrintPreview, prefs::kPrintPreviewDisabled, true },
 #else
       { switches::kEnablePrintPreview, prefs::kPrintPreviewDisabled, false },
 #endif
 #if defined(OS_CHROMEOS)
       { switches::kDisableGData, prefs::kDisableGData, true },
+      { switches::kEnableTouchpadThreeFingerClick,
+          prefs::kEnableTouchpadThreeFingerClick, true },
 #endif
 };
 
 const CommandLinePrefStore::IntegerSwitchToPreferenceMapEntry
     CommandLinePrefStore::integer_switch_map_[] = {
       { switches::kDiskCacheSize, prefs::kDiskCacheSize },
       { switches::kMediaCacheSize, prefs::kMediaCacheSize },
     };
 
 CommandLinePrefStore::CommandLinePrefStore(const CommandLine* command_line)
@@ skipping 93 matching lines @@
   }
 }
 
 void CommandLinePrefStore::ApplyBackgroundModeSwitches() {
   if (command_line_->HasSwitch(switches::kDisableBackgroundMode) ||
       command_line_->HasSwitch(switches::kDisableExtensions)) {
     Value* value = Value::CreateBooleanValue(false);
     SetValue(prefs::kBackgroundModeEnabled, value);
   }
 }