Aura doesn't use scrollbar buttons.

With https://bugs.webkit.org/show_bug.cgi?id=89264 we get webkit to delegate the size determination to WebThemeEngineImpl, and then we can retrieve it from the either native_theme_aura or native_theme_win.

BUG=
TEST=


Review URL: https://chromiumcodereview.appspot.com/10532207

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@142993 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 18 insertions, 1 deletions

diff --git a/webkit/glue/webthemeengine_impl_win.cc b/webkit/glue/webthemeengine_impl_win.cc
index 30464e0..7e60501 100644
--- a/webkit/glue/webthemeengine_impl_win.cc
+++ b/webkit/glue/webthemeengine_impl_win.cc
@@ -15,6 +15,7 @@
 using WebKit::WebCanvas;
 using WebKit::WebColor;
 using WebKit::WebRect;
+using WebKit::WebSize;
 
 namespace webkit_glue {
 
@@ -981,4 +982,19 @@ void WebThemeEngineImpl::paintProgressBar(
                                       extra);
 }
 
+WebSize WebThemeEngineImpl::getSize(int part) {
+  switch (part) {
+    case SBP_ARROWBTN: {
+      gfx::Size size = ui::NativeTheme::instance()->GetPartSize(
+          ui::NativeTheme::kScrollbarUpArrow,
+          ui::NativeTheme::kNormal,
+          ui::NativeTheme::ExtraParams());
+      return WebSize(size.width(), size.height());
+    }
+    default:
+      NOTREACHED() << "Unhandled part: " << part;
+  }
+  return WebSize();
+}
+
 }  // namespace webkit_glue
diff --git a/webkit/glue/webthemeengine_impl_win.h b/webkit/glue/webthemeengine_impl_win.h
index 49a05cf..be6642b 100644
--- a/webkit/glue/webthemeengine_impl_win.h
+++ b/webkit/glue/webthemeengine_impl_win.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 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.
 
@@ -41,6 +41,7 @@ class WebThemeEngineImpl : public WebKit::WebThemeEngine {
       WebKit::WebCanvas* canvas, const WebKit::WebRect& barRect,
       const WebKit::WebRect& valueRect, bool determinate,
       double animatedSeconds);
+  virtual WebKit::WebSize getSize(int part);
 };
 
 }  // namespace webkit_glue