Remove base::Value::IsType() in //components

This change removes the deprecated base::Value::IsType() in //components
in favor of using is_{none,bool,...}() directly.

Bug: 646113
Change-Id: Id03d55287eefbb262aa19da2a9eea01474901d06
Reviewed-on: https://chromium-review.googlesource.com/781663
Reviewed-by: Colin Blundell <[email protected]>
Commit-Queue: Jan Wilken Dörrie <[email protected]>
Cr-Commit-Position: refs/heads/master@{#518598}
32 files changed