Switch all contexts in a share group to be on the same screen as the window they present to.

ui/gl/gl_share_group.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gl/gl_share_group.h"
 
 #include "base/logging.h"
 #include "ui/gl/gl_context.h"
 
 namespace gfx {
 
 GLShareGroup::GLShareGroup()
-    : shared_context_(NULL) {
+    : shared_context_(NULL)
+#if defined(OS_MACOSX)
+    , renderer_id_(-1)
+#endif
+    {
 }
 
 void GLShareGroup::AddContext(GLContext* context) {
   contexts_.insert(context);
 }
 
 void GLShareGroup::RemoveContext(GLContext* context) {
   contexts_.erase(context);
   if (shared_context_ == context)
     shared_context_ = NULL;
@@ skipping 20 matching lines @@
 
 void GLShareGroup::SetSharedContext(GLContext* context) {
   DCHECK(contexts_.find(context) != contexts_.end());
   shared_context_ = context;
 }
 
 GLContext* GLShareGroup::GetSharedContext() {
   return shared_context_;
 }
 
+#if defined(OS_MACOSX)
+void GLShareGroup::SetRendererID(int renderer_id) {
+  renderer_id_ = renderer_id;
+}
+
+int GLShareGroup::GetRendererID() {
+  return renderer_id_;
+}
+#endif
+
 GLShareGroup::~GLShareGroup() {
 }
 
 }  // namespace gfx