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

gpu/command_buffer/service/texture_manager.h

Index: gpu/command_buffer/service/texture_manager.h
diff --git a/gpu/command_buffer/service/texture_manager.h b/gpu/command_buffer/service/texture_manager.h
index f2cda9ecd9302cc55a87d909e4deacf7962dbe83..bc215ac941923f6b0a7caaedcca0c2317828424e 100644
--- a/gpu/command_buffer/service/texture_manager.h
+++ b/gpu/command_buffer/service/texture_manager.h
@@ -758,9 +758,8 @@ class GPU_EXPORT TextureManager : public base::trace_event::MemoryDumpProvider {
                  ProgressReporter* progress_reporter);
   ~TextureManager() override;
 
-  void set_framebuffer_manager(FramebufferManager* manager) {
-    framebuffer_manager_ = manager;
-  }
+  void AddFramebufferManager(FramebufferManager* framebuffer_manager);
+  void RemoveFramebufferManager(FramebufferManager* framebuffer_manager);
 
   // Init the texture manager.
   bool Initialize();
@@ -1192,7 +1191,7 @@ class GPU_EXPORT TextureManager : public base::trace_event::MemoryDumpProvider {
 
   scoped_refptr<FeatureInfo> feature_info_;
 
-  FramebufferManager* framebuffer_manager_;
+  std::vector<FramebufferManager*> framebuffer_managers_;
 
   // Info for each texture in the system.
   typedef base::hash_map<GLuint, scoped_refptr<TextureRef> > TextureMap;