7d320c45a Add a macro for prefixing embedder.h symbols (flutter/engine#9851) (#36762)

https://github.com/flutter/engine/compare/1f3013163d48...7d320c45ab25

git log 1f3013163d48f46cc967b31aac193691ef28f7d9..7d320c45ab2556b69f2f6453eab2f8b1156275ae --no-merges --oneline
7d320c45a Add a macro for prefixing embedder.h symbols (flutter/engine#9851)

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bin/internal/engine.version

-1f3013163d48f46cc967b31aac193691ef28f7d9
+7d320c45ab2556b69f2f6453eab2f8b1156275ae