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
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 316b488eb2264782a9ae8f94a0b4c25d970999f5..fc4061c71ab2dd6389ea52ee24981ab52813bacf 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -546,6 +546,12 @@ WebPreferences WebContentsImpl::GetWebkitPrefs(RenderViewHost* rvh,
     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;