Blink side change to force a Blink heap garbage collection when a GC is forced from V8.
Blink side change to force a Blink heap garbage collection when a GC is forced from V8.

This is used for tests that force garbage collections from V8 to
verify that objects die when expected.

R=haraken@chromium.org
BUG=

Review URL: https://codereview.chromium.org/146693008

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@166134 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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