cc: Create a cc::ScrollbarThemePainter and an adapter class in compositor bindings.

cc/test/fake_web_scrollbar.cc

Index: cc/test/fake_web_scrollbar.cc
diff --git a/cc/test/fake_web_scrollbar.cc b/cc/test/fake_web_scrollbar.cc
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index 0000000000000000000000000000000000000000..eafda6705f7ef1ca2ba8436cd02de60232770cb1
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+++ b/cc/test/fake_web_scrollbar.cc
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+// Copyright 2012 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.
+
+#include "cc/test/fake_web_scrollbar.h"
+
+namespace cc {
+
+bool FakeWebScrollbar::isOverlay() const {
+  return false;
+}
+
+int FakeWebScrollbar::value() const {
+  return 0;
+}
+
+WebKit::WebPoint FakeWebScrollbar::location() const {
+  return WebKit::WebPoint();
+}
+
+WebKit::WebSize FakeWebScrollbar::size() const {
+  return WebKit::WebSize();
+}
+
+bool FakeWebScrollbar::enabled() const {
+  return true;
+}
+
+int FakeWebScrollbar::maximum() const {
+  return 0;
+}
+
+int FakeWebScrollbar::totalSize() const {
+  return 0;
+}
+
+bool FakeWebScrollbar::isScrollViewScrollbar() const {
+  return false;
+}
+
+bool FakeWebScrollbar::isScrollableAreaActive() const {
+  return true;
+}
+
+WebKit::WebScrollbar::ScrollbarControlSize FakeWebScrollbar::controlSize() const {
+  return WebScrollbar::RegularScrollbar;
+}
+
+WebKit::WebScrollbar::ScrollbarPart FakeWebScrollbar::pressedPart() const {
+  return WebScrollbar::NoPart;
+}
+
+WebKit::WebScrollbar::ScrollbarPart FakeWebScrollbar::hoveredPart() const {
+  return WebScrollbar::NoPart;
+}
+
+WebKit::WebScrollbar::ScrollbarOverlayStyle FakeWebScrollbar::scrollbarOverlayStyle() const {
+  return WebScrollbar::ScrollbarOverlayStyleDefault;
+}
+
+bool FakeWebScrollbar::isCustomScrollbar() const {
+  return false;
+}
+
+WebKit::WebScrollbar::Orientation FakeWebScrollbar::orientation() const {
+  return WebScrollbar::Horizontal;
+}
+
+}  // namespace cc