Fix regression which caused Assistant chips to shrink.

For Assistant, we use a horizontal BoxLayout which relies on
GetHeightForWidth to determine chip size. By removing this method
override we will no longer respect kPreferredHeightDip.

Screenshot in the bug.

Bug: b:117991892
Change-Id: Ic6b889a477b262290285ad5e61c3922ee43ceb6f
Reviewed-on: https://chromium-review.googlesource.com/c/1292608
Commit-Queue: David Black <dmblack@google.com>
Reviewed-by: Weidong Guo <weidongg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#601360}

ash/app_list/views/suggestion_chip_view.cc

@@ -97,7 +97,11 @@ void SuggestionChipView::SetBackgroundBlurEnabled(bool enabled) {
 
 gfx::Size SuggestionChipView::CalculatePreferredSize() const {
   const int preferred_width = views::View::CalculatePreferredSize().width();
-  return gfx::Size(preferred_width, kPreferredHeightDip);
+  return gfx::Size(preferred_width, GetHeightForWidth(preferred_width));
+}
+
+int SuggestionChipView::GetHeightForWidth(int width) const {
+  return kPreferredHeightDip;
 }
 
 void SuggestionChipView::ChildVisibilityChanged(views::View* child) {

ash/app_list/views/suggestion_chip_view.h

@@ -47,6 +47,7 @@ class APP_LIST_EXPORT SuggestionChipView : public views::Button {
 
   // views::View:
   gfx::Size CalculatePreferredSize() const override;
+  int GetHeightForWidth(int width) const override;
   void ChildVisibilityChanged(views::View* child) override;
   void OnPaintBackground(gfx::Canvas* canvas) override;
   void OnFocus() override;