Tidy up Android's is-tablet functionality.

chrome/browser/android/chrome_startup_flags.cc

Index: chrome/browser/android/chrome_startup_flags.cc
diff --git a/chrome/browser/android/chrome_startup_flags.cc b/chrome/browser/android/chrome_startup_flags.cc
index 5cafcc34f9da647d9248fabb7b4ee22103d75816..32b13834b71d1b172047e60f39df80724bf0520f 100644
--- a/chrome/browser/android/chrome_startup_flags.cc
+++ b/chrome/browser/android/chrome_startup_flags.cc
@@ -28,11 +28,6 @@ void SetCommandLineSwitchASCII(const std::string& switch_string,
     command_line->AppendSwitchASCII(switch_string, value);
 }
 
-bool IsTabletUi() {
-  NOTIMPLEMENTED() << "TODO(yfriedman): Upstream this";
-  return false;
-}
-
 }  // namespace
 
 void SetChromeSpecificCommandLineFlags() {
@@ -45,10 +40,6 @@ void SetChromeSpecificCommandLineFlags() {
   // Turn on autologin.
   SetCommandLineSwitch(switches::kEnableAutologin);
 
-  // Tablet UI switch (used for using correct version of NTP HTML).
-  if (IsTabletUi())
-    SetCommandLineSwitch(switches::kTabletUi);
-
   // Enable prerender for the omnibox.
   SetCommandLineSwitchASCII(
       switches::kPrerenderMode, switches::kPrerenderModeSwitchValueEnabled);