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Steps to reproduce the problem:
1. Feature imrpvomentand code-merge suggested
2. 
3. 

What is the expected behavior?
The proposal is to merge the surface_manager & surface_factory functions to simplify * cleanup some of the book-keeping associated with surfaces corresponding to CompositorFrameSink

What went wrong?
This is a proposal to simplify the code around CompositorFrameSinks & Surfaces in cc/surfaces, cc/trees & cc/output.

Did this work before? N/A 

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