Reverting because I reverted the CL this depends on...

Reverting because I reverted the CL this depends on...

Revert 114389 - WebSocket Pepper API: Add live object check to WebSocket PPAPI tests

- Add RUN_TEST_WITH_REFERENCE_CHECK macro which run a test then check leaked
 pepper objects.
- Use that macro to run all WebSocket related PPAPI unit tests
- Fix some object leak in tests found by the macro

BUG=87310
TEST=ui_tests --gtest_filter='PPAPITest.WebSocket_*'

Review URL: http://codereview.chromium.org/8934003

TBR=toyoshim@chromium.org
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=114400