This simplifies the code because it is not needed to create OpenGL
texture to allocate buffer. This way we can get rid of creating a
temporary OpenGL context and swapping EGLSurface.

Moreover, eglCreateImage() does not guarantee that the buffer is
shareable thus certain GPU drivers may fail to export.

Pick-to: 6.9
Fixes: QTBUG-136257
Done-with: Jan Palus
Change-Id: Ie72d052a2a8b1a41bebf0eab8a4928d38c8fc864
Reviewed-by: Allan Sandfeld Jensen <[email protected]>
Reviewed-by: Jan Palus <[email protected]>

Change-Id: I4150bbcd6649b2ae144fa2afe0d3c64df1548135
Reviewed-by: Qt Submodule Update Bot <[email protected]>

Introduced with 2a9444920bcd2f5d1832971bd6275ebdc5515546
We need the version checks to support building on top of
older Qt versions.

Change-Id: Ifddf8a194a23233eeab61111380dc62ce407f6e7
Reviewed-by: Tor Arne Vestbø <[email protected]>

There are several issues affecting Sec-CH-UA and -Full-Version-List,
because the general algorithm which extends and shuffles these lists
was not used in WebEngine.

At the current version of Chromium we can't use the corresponding user
agent utils functions, because they only allow one extra brand/version
pair besides the two generated (Chromium and Not-A-Brand) ones.
This change implements a simplified method to extend and shuffle the
version lists to follow the behavior of Chromium and support more than
three elements.

QTBUG-133799: The order of brands and versions are still not
customizable by the API user, but it is permutated in each major
version of Chromium to comply with the standards. To allow
customization of the order seems to be impossible without changing our
public API.

QTBUG-133708: The missing values of Sec-CH-UA are generated from the
full version list, not customizable individually. This way it keeps
the same values and the same algorithmically generated order as the
full version list.

Task-number: QTBUG-133711
Task-number: QTBUG-133708
Task-number: QTBUG-133777
Task-number: QTBUG-133799
Change-Id: I96f214ce54190666a34779130a04b56f600abef7
Reviewed-by: Peter Varga <[email protected]>
Reviewed-by: Moss Heim <[email protected]>