Delete flag --enable-css-transform-pinch.

content/browser/web_contents/web_contents_impl.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 "content/browser/web_contents/web_contents_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
@@ skipping 629 matching lines @@
   if (command_line.HasSwitch(switches::kDefaultTileHeight))
     prefs.default_tile_height =
         GetSwitchValueAsInt(command_line, switches::kDefaultTileHeight, 1);
   if (command_line.HasSwitch(switches::kMaxUntiledLayerWidth))
     prefs.max_untiled_layer_width =
         GetSwitchValueAsInt(command_line, switches::kMaxUntiledLayerWidth, 1);
   if (command_line.HasSwitch(switches::kMaxUntiledLayerHeight))
     prefs.max_untiled_layer_height =
         GetSwitchValueAsInt(command_line, switches::kMaxUntiledLayerHeight, 1);
 
-  // TODO(scottmg): Probably Native is wrong: http://crbug.com/133312
-  if (gfx::Screen::GetNativeScreen()->IsDIPEnabled()) {
-    // Only apply when using DIP coordinate system as this setting interferes
-    // with fixed layout mode.
-    // TODO(danakj): Fixed layout mode is going away, so turn this on always.
-    prefs.apply_default_device_scale_factor_in_compositor = true;
-  }
-
-  prefs.apply_page_scale_factor_in_compositor =
-      command_line.HasSwitch(switches::kEnablePinch);
-
-  if (command_line.HasSwitch(switches::kEnableCssTransformPinch)) {
-    prefs.apply_default_device_scale_factor_in_compositor = false;
-    prefs.apply_page_scale_factor_in_compositor = false;
-  }
+  prefs.apply_default_device_scale_factor_in_compositor = true;
+  prefs.apply_page_scale_factor_in_compositor = true;

[piman, 2013/02/01 00:25:09]

apply_page_scale_factor_in_compositor was only set when kEnablePinch was set.
Did you intend to change this?

I don't understand fully what the flags effect is, so double-checking

 
   prefs.per_tile_painting_enabled =
       command_line.HasSwitch(cc::switches::kEnablePerTilePainting);
   prefs.accelerated_animation_enabled =
       !command_line.HasSwitch(cc::switches::kDisableThreadedAnimation);
 
   prefs.fixed_position_creates_stacking_context = !command_line.HasSwitch(
       switches::kDisableFixedPositionCreatesStackingContext);
 
   prefs.gesture_tap_highlight_enabled = command_line.HasSwitch(
@@ skipping 2774 matching lines @@
 
 BrowserPluginGuest* WebContentsImpl::GetBrowserPluginGuest() {
   return browser_plugin_guest_.get();
 }
 
 BrowserPluginEmbedder* WebContentsImpl::GetBrowserPluginEmbedder() {
   return browser_plugin_embedder_.get();
 }
 
 }  // namespace content