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This CL fixes
1 - If we get redundant calls to the TileSuggestionProcessor, ignore them
and don't update the underlying widget. This will prevent the previous
suggestion from flashing up momementarily before new tile set is loaded.
2 - Default ItemAnimator is removed to prevent the jank
3 - Only reload the tile if NTP is reloaded via home button. For regular
page load, don't animate query tiles (fixes submit query flow jank)
4 - Fix for international languages - ASCII comparison is not enough
for non-english languages. string16 is used for comparison purposes,
which fixes the omnibox flow for query tiles (Bug 1086672)

Bug : 1086672, 1081557

Change-Id: I8536759fb3f7a9c9c00ddb56f5c12f40df26a114
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2211661
Commit-Queue: Shakti Sahu <shaktisahu@chromium.org>
Reviewed-by: Tommy Li <tommycli@chromium.org>
Reviewed-by: David Trainor <dtrainor@chromium.org>
Cr-Commit-Position: refs/heads/master@{#772080}