Bug 1332483: Remove erroneous assert. r=milan

MozReview-Commit-ID: 5iqr5qPI3lN

--HG--
extra : rebase_source : 12cd9a666998264fc401af81a16beeb3037895d9

gfx/thebes/gfxWindowsPlatform.cpp

@@ -1446,8 +1446,6 @@ gfxWindowsPlatform::RecordContentDeviceFailure(TelemetryDeviceCode aDevice)
 void
 gfxWindowsPlatform::InitializeDevices()
 {
-  MOZ_ASSERT(!InSafeMode());
-
   if (XRE_IsParentProcess()) {
     // If we're the UI process, and the GPU process is enabled, then we don't
     // initialize any DirectX devices. We do leave them enabled in gfxConfig