Mac: Add flag for expose-for-tabs

BUG=50307
TEST=none

Review URL: http://codereview.chromium.org/3020034

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@53798 0039d316-1c4b-4281-b951-d872f2087c98

chrome/common/chrome_switches.cc

@@ -1065,13 +1065,16 @@ const char kPasswordStore[]                 = "password-store";
 #endif
 
 #if defined(OS_MACOSX)
-// Cause the OS X sandbox write to syslog every time an access to a resource
-// is denied by the sandbox.
-const char kEnableSandboxLogging[]          = "enable-sandbox-logging";
-
 // Temporary flag to prevent Flash from negotiating the Core Animation drawing
 // model. This will be removed once the last issues have been resolved.
 const char kDisableFlashCoreAnimation[]     = "disable-flash-core-animation";
+
+// Enables the tabs expose feature ( http://crbug.com/50307 ).
+const char kEnableExposeForTabs[] = "enable-expose-for-tabs";
+
+// Cause the OS X sandbox write to syslog every time an access to a resource
+// is denied by the sandbox.
+const char kEnableSandboxLogging[]          = "enable-sandbox-logging";
 #else
 // Enable Kiosk mode.
 const char kKioskMode[]                     = "kiosk";

chrome/common/chrome_switches.h

@@ -320,6 +320,7 @@ extern const char kPasswordStore[];
 
 #if defined(OS_MACOSX)
 extern const char kDisableFlashCoreAnimation[];
+extern const char kEnableExposeForTabs[];
 extern const char kEnableSandboxLogging[];
 #else
 extern const char kKioskMode[];