Deleted Widget/FrameViewBase

third_party/WebKit/Source/platform/scroll/ScrollbarParent.h

 /*

[joelhockey, 2017/05/01 06:02:27]

It appears that git or something thinks that I copied ScrollbarParent.h from
PlatformChromeClient.h.  This is not the case.  I did:

git mv third_party/WebKit/Source/platform/FrameViewBase.h
third_party/WebKit/Source/platform/scroll/ScrollbarParent.h

Please let me know if there is some other hint command I should run to make it
clear that this file is a fork/rename of FrameViewBase.h.

- * Copyright (C) 2008 Apple Inc.  All rights reserved.
+ * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.  All rights reserved.
+ * Copyright (C) 2008 Collabora Ltd.  All rights reserved.
+ * Copyright (C) 2013 Google Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef PlatformChromeClient_h
-#define PlatformChromeClient_h
+#ifndef ScrollbarParent_h
+#define ScrollbarParent_h
 
 #include "platform/PlatformExport.h"
+#include "platform/geometry/IntPoint.h"
 #include "platform/heap/Handle.h"
-#include "platform/wtf/Allocator.h"
-#include "platform/wtf/Noncopyable.h"
 
 namespace blink {
-class IntRect;
-class FrameViewBase;
-class LocalFrame;
 
-class PLATFORM_EXPORT PlatformChromeClient
-    : public GarbageCollectedFinalized<PlatformChromeClient> {
-  WTF_MAKE_NONCOPYABLE(PlatformChromeClient);
+// ScrollbarParent is the parent of Scrollbar.

[dcheng, 2017/05/01 15:28:36]

Nit: this comment is slightly confusing, because it could be interpreted to read
that this is the parent *class* of Scrollbar (which it isn't)

[joelhockey, 2017/05/01 22:03:18]

Fair point.  Comment modified

+// This is implemented by core/frame/FrameView and is required for
+// geometry conversions with the root frame.
+class PLATFORM_EXPORT ScrollbarParent : public GarbageCollectedMixin {

[dcheng, 2017/05/01 15:28:36]

One potential name alternative: ScrollbarContainer?

(I don't feel strongly about this, but per the above comment, 'parent' could
read slightly ambiguously, as one doesn't normally imagine scrollbars as having
a tree hierarchy)

[joelhockey, 2017/05/01 22:03:18]

I'm happy to change name if there is consensus or at least majority agreement
with szager and haraken.  My vote is still for ScrollbarParent since this is the
class that is required for Scrollbar::SetParent.  If we rename the class to
ScrollbarContainer then I would suggest to change Scrollbar method to
SetContainer.

+ public:
+  ScrollbarParent(){};
+  virtual ~ScrollbarParent(){};

[dcheng, 2017/05/01 15:28:36]

Nit: remove the ;

[joelhockey, 2017/05/01 22:03:18]

Done

 
- public:
-  PlatformChromeClient() {}
-  virtual ~PlatformChromeClient() {}
-  DEFINE_INLINE_VIRTUAL_TRACE() {}
-
-  // Requests the host invalidate the contents.
-  virtual void InvalidateRect(const IntRect& update_rect) = 0;
-
-  // Converts the rect from the viewport coordinates to screen coordinates.
-  virtual IntRect ViewportToScreen(const IntRect&,
-                                   const FrameViewBase*) const = 0;
-
-  // Converts the scalar value from the window coordinates to the viewport
-  // scale.
-  virtual float WindowToViewportScalar(const float) const = 0;
-
-  virtual void ScheduleAnimation(LocalFrame*) = 0;
+  virtual IntPoint ConvertPointFromRootFrame(const IntPoint&) const = 0;
 };
 
 }  // namespace blink
 
-#endif  // PlatformChromeClient_h
+#endif  // ScrollbarParent_h