Renames Assistant's ActionView and LogoView.

Previously ActionView was named because it encapsulated a few possible
states depending on whether the user was using text or voice input
modality. Now, ActionView is just a wrapper around a LogoView and is
only used with voice input modality to represent mic state. As such, I've
renamed ActionView to MicView to be more easily understood.

Previously BaseLogoView was created to wrap LogoView depending on the
status of the LibAssitant build flag, but users of LogoView will never
actually use LogoView directly, only BaseLogoView. This being the case,
I am renaming LogoView to LogoViewImpl and BaseLogoView to LogoView. I
will rename BaseLogoView in a separate CL so that git can accurately
track the diff.

Bug: b:111571925
Change-Id: I3c543471c93af3a513afa6280ffe0cb037d54a00
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1521590
Commit-Queue: David Black <dmblack@google.com>
Reviewed-by: Xiaohui Chen <xiaohuic@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#641338}
11 files changed