Ported GpuCrashTest to Telemetry, renaming the test to ContextLost.

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 158c4f9bec596cc4cf4db60f10196f01210eacc8..1c1e99d0e9bf94c5fa78dae8f4c74a97b428412c 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -155,6 +155,11 @@ const char kDisableDeviceOrientation[]      = "disable-device-orientation";
 // Handles URL requests by NPAPI plugins through the renderer.
 const char kDisableDirectNPAPIRequests[]    = "disable-direct-npapi-requests";
 
+// Disable the per-domain blocking for 3D APIs after GPU reset.
+// This switch is intended only for tests.
+extern const char kDisableDomainBlockingFor3DAPIs[] =
+    "disable-domain-blocking-for-3d-apis";
+
 // Disable experimental WebGL support.
 const char kDisableExperimentalWebGL[]      = "disable-webgl";