Update from https://crrev.com/306655

ui/gl/gl_context.cc

Index: ui/gl/gl_context.cc
diff --git a/ui/gl/gl_context.cc b/ui/gl/gl_context.cc
index 533b7d3146e89de6242720d611f9d967bde6dd94..e35806917f3e15cbc87f77124a8fa4c73d850e80 100644
--- a/ui/gl/gl_context.cc
+++ b/ui/gl/gl_context.cc
@@ -82,6 +82,10 @@ bool GLContext::GetTotalGpuMemory(size_t* bytes) {
 void GLContext::SetSafeToForceGpuSwitch() {
 }
 
+bool GLContext::ForceGpuSwitchIfNeeded() {
+  return true;
+}
+
 void GLContext::SetUnbindFboOnMakeCurrent() {
   NOTIMPLEMENTED();
 }
@@ -199,6 +203,8 @@ void GLContext::SetupForVirtualization() {
 bool GLContext::MakeVirtuallyCurrent(
     GLContext* virtual_context, GLSurface* surface) {
   DCHECK(virtual_gl_api_);
+  if (!ForceGpuSwitchIfNeeded())
+    return false;
   return virtual_gl_api_->MakeCurrent(virtual_context, surface);
 }