[EFL] Change the behavior of ewk_view_scale_set.
https://bugs.webkit.org/show_bug.cgi?id=70078

Reviewed by Eric Seidel.

Remove center point basis zoom alignment from ewk_view_scale_set to call
Page::setPageScaleFactor without any adjustment.

* ewk/ewk_view.cpp:
(ewk_view_scale_set):
* ewk/ewk_view.h:


git-svn-id: svn://svn.chromium.org/blink/trunk@103288 bbb929c8-8fbe-4397-9dbb-9b2b20218538
void ewk_view_pre_render_cancel(Evas_Object* ewkView)
{
    EWK_VIEW_SD_GET_OR_RETURN(ewkView, smartData);
    EINA_SAFETY_ON_NULL_RETURN(smartData->api->pre_render_cancel);
    smartData->api->pre_render_cancel(smartData);
}

void ewk_view_pre_render_cancel(Evas_Object* ewkView)
{
    EWK_VIEW_SD_GET_OR_RETURN(ewkView, smartData);
    EINA_SAFETY_ON_NULL_RETURN(smartData->api->pre_render_cancel);
    smartData->api->pre_render_cancel(smartData);
}
