(Re-landing http://codereview.chromium.org/5991003)

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
===================================================================
--- chrome/common/chrome_switches.cc	(revision 69760)
+++ chrome/common/chrome_switches.cc	(working copy)
@@ -139,6 +139,12 @@
 // Triggers a pletora of diagnostic modes.
 const char kDiagnostics[]                   = "diagnostics";
 
+// Disables client-visible 3D APIs, in particular WebGL and Pepper 3D.
+// This is controlled by policy and is kept separate from the other
+// enable/disable switches to avoid accidentally regressing the policy
+// support for controlling access to these APIs.
+const char kDisable3DAPIs[]                 = "disable-3d-apis";
+
 // Disables accelerated compositing.
 const char kDisableAcceleratedCompositing[] =
     "disable-accelerated-compositing";