remove ntp app install hint

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 71f7efd44f77566629b1aa9610c1a72b77bf9024..fd7c1bc3287e29e1d2fc094a233b60c9d335d35b 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -632,9 +632,6 @@ const char kEnableWebsiteSettings[]         = "enable-website-settings";
 // Uses WebSocket over SPDY.
 const char kEnableWebSocketOverSpdy[]       = "enable-websocket-over-spdy";
 
-// Enables the web store link experiment.
-const char kEnableWebStoreLink[]            = "enable-webstore-link";
-
 // Enables experimental features for Spellchecker. Right now, the first
 // experimental feature is auto spell correct, which corrects words which are
 // misspelled by typing the word with two consecutive letters swapped. The
@@ -913,9 +910,6 @@ const char kNoStartupWindow[]               = "no-startup-window";
 // user needs to re-authenticate.
 const char kNotifyCloudPrintTokenExpired[]  = "notify-cp-token-expired";
 
-// Shows a [+] at the end of apps pages on the NTP.
-const char kNtpAppInstallHint[]             = "ntp-app-install-hint";
-
 // Specifies the maximum number of threads to use for running the Proxy
 // Autoconfig (PAC) script.
 const char kNumPacThreads[]                 = "num-pac-threads";