Disable DX Capturer to unblock testing

remoting/host/desktop_environment_options.cc

Index: remoting/host/desktop_environment_options.cc
diff --git a/remoting/host/desktop_environment_options.cc b/remoting/host/desktop_environment_options.cc
index 842c28ede526ff66736c086ec6d801d4285d4d65..ec1995e12d1753de296cd04983555975bf902c65 100644
--- a/remoting/host/desktop_environment_options.cc
+++ b/remoting/host/desktop_environment_options.cc
@@ -37,7 +37,8 @@ DesktopEnvironmentOptions::operator=(
 void DesktopEnvironmentOptions::Initialize() {
   desktop_capture_options_.set_detect_updated_region(true);
 #if defined (OS_WIN)
-  desktop_capture_options_.set_allow_directx_capturer(true);
+  // TODO(joedow): Enable the DirectX capturer once the blocking bugs are fixed.
+  // desktop_capture_options_.set_allow_directx_capturer(true);
 #endif
 }