Reviewed by Martin Robinson.

        [GTK] Support for viewport meta tag
        https://bugs.webkit.org/show_bug.cgi?id=45443

        Included viewport test cases for WebKitGtk

        * platform/gtk/Skipped: Unskip fast/viewport except viewport-45.html.
2010-12-09  Joone Hur  <joone@kldp.org>

        Reviewed by Martin Robinson.

        [GTK] Support for viewport meta tag
        https://bugs.webkit.org/show_bug.cgi?id=45443

        This patch adds a new gobject to offer the viewport properties to user agents.
        It is WebKitViewportAttributes that contains the viewport size, initial scale with limits,
        and information about whether a user is able to scale the contents in the viewport.

        This feature was introduced by Safari on the iPhone. For more information on
        the viewport properties, refer to the Safari reference library at
        http://developer.apple.com/safari/library/documentation/appleapplications/reference/safarihtmlref/articles/metatags.html

        * GNUmakefile.am: Added webkitviewportattributes.h webkitviewportattributes.cpp.
        * WebCoreSupport/ChromeClientGtk.cpp:
        (WebKit::ChromeClient::dispatchViewportDataDidChange): Added this callback to know whether the viewport arguments is available.
        * WebCoreSupport/ChromeClientGtk.h:
        * WebCoreSupport/DumpRenderTreeSupportGtk.cpp:
        (DumpRenderTreeSupportGtk::dumpConfigurationForViewport): Added this function to compute the viewport attributes with the given availableWidth and availableHeight.
        * WebCoreSupport/DumpRenderTreeSupportGtk.h:
        * WebCoreSupport/FrameLoaderClientGtk.cpp:
        (WebKit::postCommitFrameViewSetup): Invalidate the viewport attributes.
        * webkit/webkit.h:
        * webkit/webkitdefines.h:
        * webkit/webkitprivate.h: Added webkitViewportAttributesRecompute as a private function.
        * webkit/webkitviewportattributes.cpp: Added.
        (webkit_viewport_attributes_class_init):
        (webkit_viewport_attributes_init):
        (webkit_viewport_attributes_get_property):
        (webkit_viewport_attributes_set_property):
        (webkitViewportAttributesRecompute): Recompute the optimal viewport attributes and emit the viewport-attributes-changed signal.
        (webkit_viewport_attributes_recompute): a public API for calling webkitViewportAttributesRecompute.
        * webkit/webkitviewportattributes.h: Added.
        * webkit/webkitwebview.cpp:
        (webkit_web_view_get_property): Added PROP_VIEWPORT_ATTRIBUTES.
        (webkit_web_view_dispose): Deallocate the WebKitViewportAttributes instance.
        (webkit_web_view_class_init): Added the viewport-attributes-recompute-requested and viewport-attributes-changed signals.
        (webkit_web_view_init): Set the WebKitViewportAttributes instance.
        (webkit_web_view_get_viewport_attributes): Added a getter to obtain the WebKitViewportAttributes instance held by the given WebKitWebView.
        * webkit/webkitwebview.h:
        * webkit/webkitwebviewprivate.h: Added WebKitViewportAttributes as a private variable.
2010-12-09  Joone Hur  <joone@kldp.org>

         Reviewed by Martin Robinson.

         [GTK] Support for viewport meta tag
         https://bugs.webkit.org/show_bug.cgi?id=45443

         Add support for testing the viewport properties for WebKitGtk.

         * DumpRenderTree/LayoutTestController.cpp:
         (dumpConfigurationForViewportCallback): Added this JS callback to set the size of the visible viewport.
         (LayoutTestController::staticFunctions):
         * DumpRenderTree/LayoutTestController.h:
         * DumpRenderTree/gtk/LayoutTestControllerGtk.cpp:
         (LayoutTestController::dumpConfigurationForViewport): Added this function to test the viewport properties.
         * DumpRenderTree/mac/LayoutTestControllerMac.mm:
         (LayoutTestController::dumpConfigurationForViewport): Ditto.
         * DumpRenderTree/qt/LayoutTestControllerQt.cpp:
         (LayoutTestController::dumpConfigurationForViewport): Ditto.
         * DumpRenderTree/win/LayoutTestControllerWin.cpp:
         (LayoutTestController::dumpConfigurationForViewport): Ditto.
         * DumpRenderTree/wx/LayoutTestControllerWx.cpp:
         (LayoutTestController::dumpConfigurationForViewport): Ditto.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@73608 268f45cc-cd09-0410-ab3c-d52691b4dbfc