Revert 138415 - Makes the browser send pixels to the GPU process where it should.

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
===================================================================
--- content/browser/web_contents/web_contents_impl.cc	(revision 138418)
+++ content/browser/web_contents/web_contents_impl.cc	(working copy)
@@ -546,12 +546,6 @@
     prefs.max_untiled_layer_height =
         GetSwitchValueAsInt(command_line, switches::kMaxUntiledLayerHeight, 1);
 
-  if (gfx::Screen::IsDIPEnabled()) {
-    // Only apply when using DIP coordinate system as this setting interferes
-    // with fixed layout mode.
-    prefs.apply_default_device_scale_factor_in_compositor = true;
-  }
-
   content::GetContentClient()->browser()->OverrideWebkitPrefs(rvh, url, &prefs);
 
   return prefs;