This reverts commit e79d4f06.

Reason for revert: Fixed compile error

Original change's description:
> Revert "[wasm] Move the ModuleEnv to compiler and make it immutable."
> 
> This reverts commit d04660db.
> 
> Reason for revert: Suspect for blocking the roll:
> https://chromium-review.googlesource.com/c/621191
> 
> See:
> https://build.chromium.org/p/tryserver.chromium.win/builders/win_optional_gpu_tests_rel/builds/13583
> 
> Original change's description:
> > [wasm] Move the ModuleEnv to compiler and make it immutable.
> > 
> > This CL (finally) makes the contract between the compiler and the module
> > environment clear. In order to compile a function, the caller must provide
> > an instance of the compiler::ModuleEnv struct, which contains references
> > to code, function and signature tables, memory start, etc.
> > 
> > R=​mtrofin@chromium.org,ahaas@chromium.org
> > 
> > Bug: 
> > Change-Id: I68e44d5da2c5ad44dad402029c2e57f2d5d25b4f
> > Reviewed-on: https://chromium-review.googlesource.com/613880
> > Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
> > Reviewed-by: Andreas Haas <ahaas@chromium.org>
> > Commit-Queue: Ben Titzer <titzer@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#47418}
> 
> TBR=titzer@chromium.org,mtrofin@chromium.org,ahaas@chromium.org
> 
> Change-Id: I60a369a43121720fbb13ea6c2ec6ca948d60a20b
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Reviewed-on: https://chromium-review.googlesource.com/622547
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47451}

TBR=machenbach@chromium.org,titzer@chromium.org,mtrofin@chromium.org,ahaas@chromium.org

Change-Id: Ie0efa6204c41b2cb672586a7ac0a622ca13ce5fe
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/622033
Commit-Queue: Mircea Trofin <mtrofin@chromium.org>
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47453}