The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1d625d9e6abfc411096059057015d4b0612d1a32

commit 1d625d9e6abfc411096059057015d4b0612d1a32
Author: sohan <sohan.jyoti@huawei.com>
Date: Mon Mar 12 21:57:08 2018

cc: Reset ImageAnimationController maps.

This clears animation state maps maintained in IAC, on navigaion.
The navigaiton signal is recieved from LTH and the entries without
driver/recordings are cleared on activation. A new LTHI func is
introduced ::DidNavigate, which takes care of clearing both animation
and decode cache.

BUG= 789715 

Change-Id: I8c6b37a6c2783ff727931e9812ff41c4321ab855
Reviewed-on: https://chromium-review.googlesource.com/919265
Commit-Queue: Sohan Jyoti Ghosh <sohan.jyoti@huawei.com>
Reviewed-by: Khushal <khushalsagar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#542613}
[modify] https://crrev.com/1d625d9e6abfc411096059057015d4b0612d1a32/cc/trees/image_animation_controller.cc
[modify] https://crrev.com/1d625d9e6abfc411096059057015d4b0612d1a32/cc/trees/image_animation_controller.h
[modify] https://crrev.com/1d625d9e6abfc411096059057015d4b0612d1a32/cc/trees/image_animation_controller_unittest.cc
[modify] https://crrev.com/1d625d9e6abfc411096059057015d4b0612d1a32/cc/trees/layer_tree_host.cc
[modify] https://crrev.com/1d625d9e6abfc411096059057015d4b0612d1a32/cc/trees/layer_tree_host_impl.cc
[modify] https://crrev.com/1d625d9e6abfc411096059057015d4b0612d1a32/cc/trees/layer_tree_host_impl.h