Bug 1083373 part 1: Remove unused member-variable mHost from ClearKeySession and ClearKeyDecryptionManager. r=edwin
Bug 1083373 part 2: Assert that array index is in-bounds, and cast it from char to size_t to fix clang warning. r=edwin
Bug 1083373 part 3: Use string::size_type to iterate over a string, in ClearKeyUtils.cpp. r=edwin