WebSocket Pepper API: Remove binary type handling interfaces

In an API discussion, we decide to remove binary type handling interfaces
from the first release. This change just fix the interface. The change to
make the interface out of dev will follow this change.

BUG=87310
TEST=ui_test --gtest_filter='*WebSocket*'

Review URL: https://chromiumcodereview.appspot.com/9296001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@119382 0039d316-1c4b-4281-b951-d872f2087c98
17 files changed