Remove more dead code from FrameView

Remove more dead code from FrameView

Remove more dead code from FrameView:
- Remove setters for repaint delay static variables as they are never called
- Make repaint delay static variables const as they are never updated. We may
  even be able to remove them completely later on as they are non-zero only
  if REPAINT_THROTTLING is defined (and it is not).
- Remove m_borderX / m_borderX members as they are never used
- Remove updateCanHaveScrollbars() method as it is never called
- Remove isOverlappedIncludingAncestors() method as it is never called
- Remove setAnimatorsAreActive() method as it is never called
- Remove beginDeferredRepaints() / endDeferredRepaints() as they are
  unimplemented
- Remove trackedRepaintRects() method as it is never called
- Remove isVisuallyNonEmpty() method as it is never called
- Remove setLastPaintTime() setter as it is never called

R=esprehn, adamk

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=165191

[Inactive, 2014-01-16 02:13:02]

https://codereview.chromium.org/137853015/diff/1/Source/core/frame/FrameView.cpp
File Source/core/frame/FrameView.cpp (right):

https://codereview.chromium.org/137853015/diff/1/Source/core/frame/FrameView....
Source/core/frame/FrameView.cpp:95: #if ENABLE(REPAINT_THROTTLING)
Do we want to keep this? This define is only used in this file and is currently
disabled.

[esprehn, 2014-01-16 03:07:36]

Rslgtm

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[commit-bot: I haz the power, 2014-01-16 03:09:10]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/ch.dumez@samsung.com/137853015/70001

[commit-bot: I haz the power, 2014-01-16 04:03:06]

Change committed as 165191