Fix RTL scroll bars being misrendered on Android.

Source/core/platform/chromium/support/WebScrollbarImpl.cpp

Index: Source/core/platform/chromium/support/WebScrollbarImpl.cpp
diff --git a/Source/core/platform/chromium/support/WebScrollbarImpl.cpp b/Source/core/platform/chromium/support/WebScrollbarImpl.cpp
index f88bfbcd2258152e8dacc3691e82982500cddb75..6e5258dee7489ae6b63d5e66c45b0d6463442fd3 100644
--- a/Source/core/platform/chromium/support/WebScrollbarImpl.cpp
+++ b/Source/core/platform/chromium/support/WebScrollbarImpl.cpp
@@ -28,7 +28,6 @@
 
 #include "core/platform/Scrollbar.h"
 #include "core/platform/graphics/IntRect.h"
-#include "core/platform/text/TextDirection.h"
 
 namespace WebKit {
 
@@ -119,9 +118,9 @@ WebScrollbar::Orientation WebScrollbarImpl::orientation() const
     return static_cast<WebScrollbar::Orientation>(m_scrollbar->orientation());
 }
 
-bool WebScrollbarImpl::isRightToLeft() const
+bool WebScrollbarImpl::isLeftSideVerticalScrollbar() const
 {
-    return m_scrollbar->textDirection() == WebCore::RTL;
+    return m_scrollbar->isLeftSideVerticalScrollbar();
 }
 
 bool WebScrollbarImpl::isCustomScrollbar() const