Fix Japanese line breaking rule before and after ruby

Source/core/layout/line/BreakingContextInlineHeaders.h

Index: Source/core/layout/line/BreakingContextInlineHeaders.h
diff --git a/Source/core/layout/line/BreakingContextInlineHeaders.h b/Source/core/layout/line/BreakingContextInlineHeaders.h
index 7742d322d83ef721d8ad6a639980eb645917707c..f28d1b0bd4038f894430459a2fb86ed820888f96 100644
--- a/Source/core/layout/line/BreakingContextInlineHeaders.h
+++ b/Source/core/layout/line/BreakingContextInlineHeaders.h
@@ -458,7 +458,8 @@ inline void BreakingContext::handleReplaced()
         m_width.updateAvailableWidth(replacedBox.logicalHeight());
 
     // Break on replaced elements if either has normal white-space.

[leviw_travelin_and_unemployed, 2015/08/21 18:42:50]

This comment seems to need an update.

[kojii, 2015/08/22 03:49:34]

Done.

-    if ((m_autoWrap || ComputedStyle::autoWrap(m_lastWS)) && (!m_current.object().isImage() || m_allowImagesToBreak)) {
+    if ((m_autoWrap || ComputedStyle::autoWrap(m_lastWS)) && (!m_current.object().isImage() || m_allowImagesToBreak)
+        && (!m_current.object().isRubyRun() || toLayoutRubyRun(m_current.object())->canBreakBefore(m_layoutTextInfo.m_lineBreakIterator))) {
         m_width.commit();
         m_lineBreak.moveToStartOf(m_current.object());
     }
@@ -892,7 +893,8 @@ inline void BreakingContext::commitAndUpdateLineBreakIfNeeded()
 
     if (!m_current.object().isFloatingOrOutOfFlowPositioned()) {
         m_lastObject = m_current.object();
-        if (m_lastObject.isReplaced() && m_autoWrap && (!m_lastObject.isImage() || m_allowImagesToBreak) && (!m_lastObject.isListMarker() || LineLayoutListMarker(m_lastObject).isInside())) {
+        if (m_lastObject.isReplaced() && m_autoWrap && (!m_lastObject.isImage() || m_allowImagesToBreak) && (!m_lastObject.isListMarker() || LineLayoutListMarker(m_lastObject).isInside())
+            && !m_lastObject.isRubyRun()) {
             m_width.commit();
             m_lineBreak.moveToStartOf(m_nextObject);
         }