[LSC] Remove base::ASCIIToUTF16("...") in //components

This change removes calls to base::ASCIIToUTF16 in //components with a
single-line string literal and replaces them with a u"..." literal
instead. Files where this change would cause compilation errors were not
changed.

This is a mechanical change:

$ git grep -lw ASCIIToUTF16 components | xargs \
    sed -i 's/\(base::\)\?ASCIIToUTF16(\("\(\\.\|[^\\"]\)*"\))/u\2/g'
$ git cl format

Bug: 1189439
Change-Id: Ie31fb5af442621ca093c5dfc46b69c846307731a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2780083
Commit-Queue: Peter Kasting <[email protected]>
Auto-Submit: Jan Wilken Dörrie <[email protected]>
Reviewed-by: Peter Kasting <[email protected]>
Owners-Override: Peter Kasting <[email protected]>
Cr-Commit-Position: refs/heads/master@{#865632}
diff --git a/components/omnibox/browser/clipboard_provider.cc b/components/omnibox/browser/clipboard_provider.cc
index b19ad9c..73de409 100644
--- a/components/omnibox/browser/clipboard_provider.cc
+++ b/components/omnibox/browser/clipboard_provider.cc
@@ -570,7 +570,7 @@
   AutocompleteMatch match = NewBlankImageMatch();
 
   match.search_terms_args =
-      std::make_unique<TemplateURLRef::SearchTermsArgs>(base::ASCIIToUTF16(""));
+      std::make_unique<TemplateURLRef::SearchTermsArgs>(u"");
   match.search_terms_args->image_thumbnail_content.assign(
       image_bytes->front_as<char>(), image_bytes->size());
   TemplateURLRef::PostContent post_content;