Remove DEBUG_TEXT_AUTOSIZING_ON_DESKTOP altogether.

Autosizing can be triggered through devtools on desktop nowadays.

BUG=675877

Review-Url: https://codereview.chromium.org/2874783003
Cr-Commit-Position: refs/heads/master@{#471090}

third_party/WebKit/Source/core/frame/Settings.cpp

@@ -61,14 +61,7 @@ static const bool kDefaultSelectTrailingWhitespaceEnabled = false;
 #endif
 
 Settings::Settings()
-#if DEBUG_TEXT_AUTOSIZING_ON_DESKTOP
-    : text_autosizing_window_size_override_(320, 480),
-      text_autosizing_enabled_(true)
-#else
-    : text_autosizing_enabled_(false)
-#endif
-          SETTINGS_INITIALIZER_LIST {
-}
+    : text_autosizing_enabled_(false) SETTINGS_INITIALIZER_LIST {}
 
 std::unique_ptr<Settings> Settings::Create() {
   return WTF::WrapUnique(new Settings);