Do not share FBOs/VAOs/Transform feedback objects across contexts

gpu/command_buffer/service/context_group.h

Index: gpu/command_buffer/service/context_group.h
diff --git a/gpu/command_buffer/service/context_group.h b/gpu/command_buffer/service/context_group.h
index c2ebbfb2900dc34e8c55760771f436996a94927f..4a70a4892fb0d8979753425fac2719c13a859954 100644
--- a/gpu/command_buffer/service/context_group.h
+++ b/gpu/command_buffer/service/context_group.h
@@ -35,7 +35,6 @@ namespace gles2 {
 class ProgramCache;
 class BufferManager;
 class GLES2Decoder;
-class FramebufferManager;
 class MailboxManager;
 class RenderbufferManager;
 class PathManager;
@@ -166,10 +165,6 @@ class GPU_EXPORT ContextGroup : public base::RefCounted<ContextGroup> {
     return buffer_manager_.get();
   }
 
-  FramebufferManager* framebuffer_manager() const {
-    return framebuffer_manager_.get();
-  }
-
   RenderbufferManager* renderbuffer_manager() const {
     return renderbuffer_manager_.get();
   }
@@ -280,8 +275,6 @@ class GPU_EXPORT ContextGroup : public base::RefCounted<ContextGroup> {
 
   std::unique_ptr<BufferManager> buffer_manager_;
 
-  std::unique_ptr<FramebufferManager> framebuffer_manager_;
-
   std::unique_ptr<RenderbufferManager> renderbuffer_manager_;
 
   std::unique_ptr<TextureManager> texture_manager_;