[FastTextAutosizer] Enable FastTextAutosizer on tot/dev by default

chrome/browser/android/chrome_startup_flags.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 <jni.h>
 
 #include "chrome/browser/android/chrome_startup_flags.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 37 matching lines @@
   if (base::android::SysUtils::IsLowEndDevice())
     SetCommandLineSwitchASCII(switches::kDisableSyncTypes, "Favicon Images");
 
   // Enable DOM Distiller on local builds, canary and dev-channel.
   chrome::VersionInfo::Channel channel = chrome::VersionInfo::GetChannel();
   if (channel == chrome::VersionInfo::CHANNEL_UNKNOWN ||
       channel == chrome::VersionInfo::CHANNEL_CANARY ||
       channel == chrome::VersionInfo::CHANNEL_DEV) {
     SetCommandLineSwitch(switches::kEnableDomDistiller);
   }
+
+  // Enable the Fast Text Autosizer on local builds, canary and dev-channel.
+  if (channel == chrome::VersionInfo::CHANNEL_UNKNOWN ||
+      channel == chrome::VersionInfo::CHANNEL_CANARY ||
+      channel == chrome::VersionInfo::CHANNEL_DEV) {
+    SetCommandLineSwitch(switches::kEnableFastTextAutosizing);
+  }
 }