[DevTools] Prepare inspector_protocol build to move.

- Do not list inspector_protocol files anywhere outside;
- Separate concatenation from compatibility check;
- Improve files layout;
- Pass path to jinja module to CodeGenerator.

BUG=637032

Review-Url: https://codereview.chromium.org/2282283002
Cr-Original-Commit-Position: refs/heads/master@{#415137}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: a73483cd5dd6d569d079e7ea43210f8482d12552
1 file changed