Make SearchResultPageView animation clip to its onscreen bounds.

ui/app_list/views/contents_animator.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_APP_LIST_VIEWS_CONTENTS_ANIMATOR_H_
 #define UI_APP_LIST_VIEWS_CONTENTS_ANIMATOR_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 44 matching lines @@
   void UpdateCustomPageForDefaultAnimation(double progress,
                                            int from_page,
                                            int to_page) const;
 
   // Updates the position of the search box view, placing it in the correct
   // position for the transition from |from_page| to |to_page|.
   void UpdateSearchBoxForDefaultAnimation(double progress,
                                           int from_page,
                                           int to_page) const;
 
+  // Clips the drawing of the launcher page to its onscreen bounds if necessary.
+  void ClipPageToOnscreenBounds(int page_index,

[Matt Giuca, 2014/12/10 06:53:39]

Can you rename this to ClipSearchResultsPageToOnscreenBounds and update the
comment?

[calamity, 2014/12/11 04:41:08]

Done.

+                                const gfx::Rect& current_bounds,
+                                const gfx::Rect& onscreen_bounds);
+
  private:
   ContentsView* contents_view_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentsAnimator);
 };
 
 // Simple animator that slides pages in and out vertically. Appropriate for any
 // page pair.
 class DefaultAnimator : public ContentsAnimator {
  public:
@@ skipping 29 matching lines @@
 
   std::string NameForTests() const override;
   void Update(double progress, int start_page, int custom_page) override;
 
   DISALLOW_COPY_AND_ASSIGN(StartToCustomAnimator);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_CONTENTS_ANIMATOR_H_