Revert 277964 "cc: In SyncFromActiveLayer, drop all tiles not in..."

Revert 277964 "cc: In SyncFromActiveLayer, drop all tiles not in..."

This cl seems to cause heap use after free on the Asan bots.
LargePage
FindLongString

http://build.chromium.org/p/chromium.memory/builders/Linux%20ASan%20LSan%20Tests%20%282%29/builds/3837/steps/browser_tests/logs/LargePage

http://build.chromium.org/p/chromium.memory/builders/Linux%20ASan%20LSan%20Tests%20%283%29/builds/4211/steps/browser_tests/logs/FindLongString
> cc: In SyncFromActiveLayer, drop all tiles not in the recorded_viewport.
> 
> Currently we do a walk over all tiles in the pending tree's pile, but
> there can be 1 million x 1 million tiles on some pages, which makes this
> method take multiple _seconds_ to complete.
> 
> These loops were added in r184525 which gave the tradeoffs that led to
> them, which are that we want to only use a single pile for all the tiles
> on this layer, but we don't want raster tiles on the active layer (when
> this activates) that can't be rastered by the pile they are attached to.
> 
> Instead of walking every pile-tile, to find the tiles that are not
> present in the current recording and invalidate them, we expand
> invalidations outside the interest rect to cover the full recording tiles,
> and we expand invalidation inside the interest rect to include any raster
> tiles that don't have a recording (such as in the offscreen animating gif
> case). We give this expanded invalidation to the pending layer, causing
> it to drop rastered tiles from the active tree that intersect with an
> unrecorded area.
> 
> R=enne
> BUG=371839
> 
> Review URL: https://codereview.chromium.org/294163009

TBR=danakj@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=277980

[perkj_chrome, 2014-06-18 08:20:33]

Committed patchset #1 manually as r277980 (tree was closed).