Run clang-tidy modernize-use-override on //ui/views/*

This is a run of
run-clang-tidy.py -checks="-*,modernize-use-override" -header-filter=ui/views/* \\src\\ui\\views\\

BUG=940732
TBR=sky@chromium.org

Change-Id: I30fd8d209039d7f357ae38b240afd4b110e8f94d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1530839Reviewed-by: Robert Liao <robliao@chromium.org>
Commit-Queue: Robert Liao <robliao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#642313}

ui/views/animation/ink_drop_unittest.cc

@@ -27,7 +27,7 @@ enum InkDropType { INK_DROP_STUB, INK_DROP_IMPL };
 class InkDropTest : public testing::TestWithParam<testing::tuple<InkDropType>> {
  public:
   InkDropTest();
-  ~InkDropTest();
+  ~InkDropTest() override;
 
  protected:
   // A dummy InkDropHost required to create an InkDrop.