Merge 193302 "Force GPU switch with CGLSetVirtualScreen only for..."

gpu/command_buffer/service/gl_context_virtual.cc

Index: gpu/command_buffer/service/gl_context_virtual.cc
===================================================================
--- gpu/command_buffer/service/gl_context_virtual.cc	(revision 194412)
+++ gpu/command_buffer/service/gl_context_virtual.cc	(working copy)
@@ -91,6 +91,13 @@
   return shared_context_->GetTotalGpuMemory(bytes);
 }
 
+void GLContextVirtual::SetSafeToForceGpuSwitch() {
+  // TODO(ccameron): This will not work if two contexts that disagree
+  // about whether or not forced gpu switching may be done both share
+  // the same underlying shared_context_.
+  return shared_context_->SetSafeToForceGpuSwitch();
+}
+
 bool GLContextVirtual::WasAllocatedUsingRobustnessExtension() {
   return shared_context_->WasAllocatedUsingRobustnessExtension();
 }