Implement "word-break: keep-all" in CSS3 Text

Source/core/layout/line/BreakingContextInlineHeaders.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All right reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 534 matching lines @@
     float lastSpaceWordSpacing = 0;
     float wordSpacingForWordMeasurement = 0;
 
     float wrapW = m_width.uncommittedWidth() + inlineLogicalWidth(m_current.object(), !m_appliedStartWidth, true);
     float charWidth = 0;
     // Auto-wrapping text should wrap in the middle of a word only if it could not wrap before the word,
     // which is only possible if the word is the first thing on the line, that is, if |w| is zero.
     bool breakWords = m_currentStyle->breakWords() && ((m_autoWrap && !m_width.committedWidth()) || m_currWS == PRE);
     bool midWordBreak = false;
     bool breakAll = m_currentStyle->wordBreak() == BreakAllWordBreak && m_autoWrap;
+    bool keepAll = m_currentStyle->wordBreak() == KeepAllWordBreak && m_autoWrap;
     bool prohibitBreakInside = m_currentStyle->hasTextCombine() && layoutText->isCombineText() && toLayoutTextCombine(layoutText)->isCombined();
     float hyphenWidth = 0;
 
     if (isSVGText) {
         breakWords = false;
         breakAll = false;
+        keepAll = false;
     }
 
     if (layoutText->isWordBreak()) {
         m_width.commit();
         m_lineBreak.moveToStartOf(m_current.object());
         ASSERT(m_current.offset() == layoutText->textLength());
     }
 
     if (m_renderTextInfo.m_text != layoutText) {
         m_renderTextInfo.m_text = layoutText;
@@ skipping 28 matching lines @@
         bool applyWordSpacing = false;
 
         if (breakWords && !midWordBreak) {
             wrapW += charWidth;
             bool midWordBreakIsBeforeSurrogatePair = U16_IS_LEAD(c) && m_current.offset() + 1 < layoutText->textLength() && U16_IS_TRAIL((*layoutText)[m_current.offset() + 1]);
             charWidth = textWidth(layoutText, m_current.offset(), midWordBreakIsBeforeSurrogatePair ? 2 : 1, font, m_width.committedWidth() + wrapW, m_collapseWhiteSpace);
             midWordBreak = m_width.committedWidth() + wrapW + charWidth > m_width.availableWidth();
         }
 
         int nextBreakablePosition = m_current.nextBreakablePosition();
-        bool betweenWords = c == '\n' || (m_currWS != PRE && !m_atStart && m_renderTextInfo.m_lineBreakIterator.isBreakable(m_current.offset(), nextBreakablePosition, breakAll ? LineBreakType::BreakAll : LineBreakType::Normal));
+        bool betweenWords = c == '\n' || (m_currWS != PRE && !m_atStart && m_renderTextInfo.m_lineBreakIterator.isBreakable(m_current.offset(), nextBreakablePosition, breakAll ? LineBreakType::BreakAll : keepAll ? LineBreakType::KeepAll : LineBreakType::Normal));
         m_current.setNextBreakablePosition(nextBreakablePosition);
 
         if (betweenWords || midWordBreak) {
             bool stoppedIgnoringSpaces = false;
             if (m_ignoringSpaces) {
                 lastSpaceWordSpacing = 0;
                 if (!m_currentCharacterIsSpace) {
                     // Stop ignoring spaces and begin at this
                     // new point.
                     m_ignoringSpaces = false;
@@ skipping 276 matching lines @@
 
     if (style.textIndentType() == TextIndentHanging)
         shouldIndentText = shouldIndentText == IndentText ? DoNotIndentText : IndentText;
 
     return shouldIndentText;
 }
 
 }
 
 #endif // BreakingContextInlineHeaders_h