Merged TIZEN_ONESHOT_DRAWING_SYNCHRONIZATION.
Macro ENABLE_TIZEN_WEBKIT2_VIEW_VISIBILITY merged
Merge pull request #21 from johndoe3/ENABLE_TIZEN_WEBKIT2_VIEW_VISIBILITY

Macro ENABLE_TIZEN_WEBKIT2_VIEW_VISIBILITY merged
Covered code with ifdefs.
Merge pull request #20 from johndoe3/feature_TIZEN_ONESHOT_DRAWING_SYNCHRONIZATION

Merged TIZEN_ONESHOT_DRAWING_SYNCHRONIZATION.