[webkit-efl] Encapsulation of ref counting in EWK classes (WK2 EFL)

[Pozdnyakov, Mikhail]

Hi all,

The idea is that EWK internal structures (those which use ref counting) can be inherited from WTF::RefCounted class,
It gives following benefits:

1)      Ref counting code is encapsulated and not copy/pasted between EWK structures.

2)      It is possible to use internally RefPtr and PassRefPtr smart pointers which also saves a lot of lines of code

Here you can see an example http://trac.webkit.org/changeset/131298 of the described approach applied.

There is also a meta bug https://bugs.webkit.org/show_bug.cgi?id=99321 for gradual refactoring of all of the EWK classes.
If someone is volunteering to modify  a certain EWK class accordingly to the described approach please
put your bug as a dependency for the meta bug.

BR,
Mikhail
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