Add an --enable-deferred-filters command-line flag.

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index c4dac9a0a26d991918338d64b4eb643d76309081..13a4410b53ec57f1fc845a2a428cb947960d7db1 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -353,6 +353,9 @@ const char kDomAutomationController[]       = "dom-automation";
 // Enable gpu-accelerated SVG/W3C filters.
 const char kEnableAcceleratedFilters[]      = "enable-accelerated-filters";
 
+// Disable gpu-accelerated 2d canvas.
+const char kEnableDeferredFilters[]         = "enable-deferred-filters";

[piman, 2014/01/23 01:19:54]

nit: Can you add this to kForwardSwitches in
chrome/browser/chromeos/login/chrome_restart_request.cc so that it also applies
to chrome os guest mode?

+
 // Enables accelerated compositing for backgrounds of root layers with
 // background-attachment: fixed. Requires kForceCompositingMode.
 const char kEnableAcceleratedFixedRootBackground[] =