gl_context_glx: add workaround to create default context

content/browser/gpu/gpu_process_host.cc

Index: content/browser/gpu/gpu_process_host.cc
diff --git a/content/browser/gpu/gpu_process_host.cc b/content/browser/gpu/gpu_process_host.cc
index c26bc4d83a5abcc71efb992e376901a8a5949434..b1a186e9316d6a40d3143d41475e66768e298439 100644
--- a/content/browser/gpu/gpu_process_host.cc
+++ b/content/browser/gpu/gpu_process_host.cc
@@ -108,6 +108,7 @@ namespace {
 
 // Command-line switches to propagate to the GPU process.
 static const char* const kSwitchNames[] = {
+    switches::kCreateDefaultContext,
     switches::kDisableAcceleratedVideoDecode,
     switches::kDisableBreakpad,
     switches::kDisableES3GLContext,
@@ -160,8 +161,7 @@ static const char* const kSwitchNames[] = {
     switches::kGpuTestingGLVendor,
     switches::kGpuTestingGLRenderer,
     switches::kGpuTestingGLVersion,
-    switches::kDisableGpuDriverBugWorkarounds
-};
+    switches::kDisableGpuDriverBugWorkarounds};
 
 enum GPUProcessLifetimeEvent {
   LAUNCHED,