Move ClipboardURLProvider into //components/omnibox.
Move ClipboardURLProvider with the other AutocompleteProvider into
//components/omnibox to simplify the construction of the provider
and break circular dependency of open_from_clipboard and omnibox
components.
Introduce a new AutocompleteProvider::Type for this new provider
(AutocompleteProvider::TYPE_CLIPBOARD_URL) with the corresponding
value in OmniboxEventProto enumeration.
Pass the AutocompleteProviderClient to the ClipboardURLProvider
and remove another layer of indirection for the construction of
the AutocompleteMatch.
Add AutocompleteProvider::TYPE_CLIPBOARD_URL to the default list
of providers and construct, if ClipboardRecentContent singleton
exists (currently only implemented on iOS), a ClipboardURLProvider.
Add unit tests for ClipboardURLProvider.
BUG=517134,517017,514225
Review URL: https://codereview.chromium.org/1273013002
Cr-Commit-Position: refs/heads/master@{#342806}
35 files changed
