[Win] Add a fast profile switcher to the Windows taskbar item.

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index 577f6489120ca15d9733845af96b2286888291ba..80179d5afff3dd7e185b185de56900ff0b9809c5 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -21,6 +21,11 @@ namespace switches {
 // all work out.
 // -----------------------------------------------------------------------------
 
+// If set, Chrome will activate any existing browsers for a specific profile.
+// Used for example by the fast-user switcher in the Windows JumpList.
+const char kActivateExistingProfileBrowser[] =
+    "activate-existing-profile-browser";
+
 // Allows third-party content included on a page to prompt for a HTTP basic
 // auth username/password pair.
 const char kAllowCrossOriginAuthPrompt[]    = "allow-cross-origin-auth-prompt";
@@ -1231,6 +1236,10 @@ const char kWindowSize[]                    = "window-size";
 // use Chromium's network stack to fetch, and V8 to evaluate.
 const char kWinHttpProxyResolver[]          = "winhttp-proxy-resolver";
 
+// Specifies which category option was clicked in the Windows Jumplist that
+// resulted in a browser startup.
+const char kWinJumplistAction[]             = "win-jumplist-action";
+
 #if defined(ENABLE_PLUGIN_INSTALLATION)
 // Specifies a custom URL for fetching plug-ins metadata. Used for testing.
 const char kPluginsMetadataServerURL[]      = "plugins-metadata-server-url";