Fix a bug in shader/program relationship.

gpu/command_buffer/service/program_manager.h

Index: gpu/command_buffer/service/program_manager.h
diff --git a/gpu/command_buffer/service/program_manager.h b/gpu/command_buffer/service/program_manager.h
index a7913bb37eb3e4dd190352819768364b68268727..f8b63091b86cd050ffb41ebd8f46d8bc3a63c226 100644
--- a/gpu/command_buffer/service/program_manager.h
+++ b/gpu/command_buffer/service/program_manager.h
@@ -569,6 +569,7 @@ class GPU_EXPORT Program : public base::RefCounted<Program> {
 
   // Shaders by type of shader.
   scoped_refptr<Shader> attached_shaders_[kMaxAttachedShaders];
+  scoped_refptr<Shader> shaders_from_last_successful_link_[kMaxAttachedShaders];
 
   // True if this program is marked as deleted.
   bool deleted_;