Make SearchResultPageView animation clip to its onscreen bounds.

ui/app_list/views/contents_animator.h

Index: ui/app_list/views/contents_animator.h
diff --git a/ui/app_list/views/contents_animator.h b/ui/app_list/views/contents_animator.h
index 8c85c3e51900be08981f7068606ae9fdb0a28847..23291f064def8d021d1c5c39746710f78eb787ac 100644
--- a/ui/app_list/views/contents_animator.h
+++ b/ui/app_list/views/contents_animator.h
@@ -62,6 +62,11 @@ class ContentsAnimator {
                                           int from_page,
                                           int to_page) const;
 
+  // Clips the drawing of the search results page to its onscreen bounds.
+  void ClipSearchResultsPageToOnscreenBounds(int page_index,
+                                             const gfx::Rect& current_bounds,
+                                             const gfx::Rect& onscreen_bounds);
+
  private:
   ContentsView* contents_view_;