Revert "Create and pass shared-histogram-allocator from browser to renderer."

This reverts commit df016a7ce60decb9174ab2201bf4864fc7cefa82.

BUG=601644

TBR=bcwhite@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1875503003

Cr-Commit-Position: refs/heads/master@{#385930}
17 files changed