URTBF after r176915.

DisplayRefreshMonitorClient is the parent class of GraphicsLayerUpdater
only if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR) is true, so override
is incorrect if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR) is false.

That's why r176915 broke the build on non PLATFORM(COCOA) platforms,
such as GTK, EFL, Apple Windows.

Additionally displayRefreshFired is only used inside USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR)
guard, so there is no reason to define it for non COCOA platforms.

* platform/graphics/GraphicsLayerUpdater.cpp:
* platform/graphics/GraphicsLayerUpdater.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@176916 268f45cc-cd09-0410-ab3c-d52691b4dbfc
[Mac] DumpRenderTree sets storage directory incorrectly
https://bugs.webkit.org/show_bug.cgi?id=139347

Reviewed by Dan Bernstein.

* DumpRenderTree/mac/DumpRenderTree.mm: (setDefaultsToConsistentValuesForTesting):
Don't use user defaults to pass per-instance paths, as user defaults are shared
across all instances.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@176917 268f45cc-cd09-0410-ab3c-d52691b4dbfc