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 faa4ebd939e945a5b7905f53cb25a3ff2c88983f..cedcbf4e629a746265962a8c95d4945e15da5567 100644
--- a/content/browser/gpu/gpu_process_host.cc
+++ b/content/browser/gpu/gpu_process_host.cc
@@ -106,6 +106,7 @@ namespace {
 
 // Command-line switches to propagate to the GPU process.
 static const char* const kSwitchNames[] = {
+    switches::kCreateDefaultGLContext,
     switches::kDisableAcceleratedVideoDecode,
     switches::kDisableBreakpad,
     switches::kDisableGpuSandbox,
@@ -158,8 +159,7 @@ static const char* const kSwitchNames[] = {
     switches::kGpuTestingGLVendor,
     switches::kGpuTestingGLRenderer,
     switches::kGpuTestingGLVersion,
-    switches::kDisableGpuDriverBugWorkarounds
-};
+    switches::kDisableGpuDriverBugWorkarounds};
 
 enum GPUProcessLifetimeEvent {
   LAUNCHED,