Revert "Reland of Moves mojo_js_integration_tests into blink. (patchset #1 id:1 of https://codereview.chromium.org/2939663002/ )"

Reason for revert:
WebKit Android (Nexus4) are still broken with four failing tests:
  JsToCppTest.BackPointer
  JsToCppTest.BitFlip
  JsToCppTest.Ping
  JsToCppTest.Echo

TBR=jbroman@chromium.org,dpranke@chromium.org,yzshen@chromium.org,jwd@chromium.org,alokp@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=699569

Change-Id: I925840dbe50bd21e6c87b03f23d6b4007d27df63
Reviewed-on: https://chromium-review.googlesource.com/538520
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#480282}
14 files changed