This reverts commit 7e079c66.

Reason for revert: native implementation should be ready for navigation.

Original change's description:
> inspector: move injected script source to native
> 
> - introduced ValueMirror interface, this interface contains methods to generate
>   different protocol entities,
> - introduced DebugPropertyIterator, this iterator iterates through object properties
>   in the following order: exotic indices, enumerable strings, all other properties,
> - removed all injected script infra, e.g. closure compiler,
> 
> R=​dgozman@chromium.org
> TBR=yangguo@chromium.org
> 
> Bug: chromium:595206
> Change-Id: Idcfc04489ee52e015ad1d1d191c3474cc65e63f2
> Reviewed-on: https://chromium-review.googlesource.com/c/1308353
> Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
> Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#57150}

TBR=dgozman@chromium.org,yangguo@chromium.org,kozyatinskiy@chromium.org

Change-Id: I8c5c61f4cfe5a66cd33eadd02ab4acec539cc3bb
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:595206
Reviewed-on: https://chromium-review.googlesource.com/c/1310055Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57176}