Implements hanging property for text-indent from CSS3

Source/core/rendering/line/BreakingContextInlineHeaders.h

Index: Source/core/rendering/line/BreakingContextInlineHeaders.h
diff --git a/Source/core/rendering/line/BreakingContextInlineHeaders.h b/Source/core/rendering/line/BreakingContextInlineHeaders.h
index 6dc45489246284b5478672c9933a0bd4b2b6b7dd..5a148ca4b6a418b208cb766c1f123ac426f0a6dc 100644
--- a/Source/core/rendering/line/BreakingContextInlineHeaders.h
+++ b/Source/core/rendering/line/BreakingContextInlineHeaders.h
@@ -899,12 +899,14 @@ inline void BreakingContext::commitAndUpdateLineBreakIfNeeded()
 
 inline IndentTextOrNot requiresIndent(bool isFirstLine, bool isAfterHardLineBreak, RenderStyle* style)
 {
-    if (isFirstLine)
-        return IndentText;
-    if (isAfterHardLineBreak && style->textIndentLine() == TextIndentEachLine)
-        return IndentText;
+    IndentTextOrNot shouldIndentText = DoNotIndentText;
+    if (isFirstLine || (isAfterHardLineBreak && style->textIndentLine()) == TextIndentEachLine)
+        shouldIndentText = IndentText;
 
-    return DoNotIndentText;
+    if (style->textIndentType() == TextIndentHanging)
+        shouldIndentText = shouldIndentText == IndentText ? DoNotIndentText : IndentText;
+
+    return shouldIndentText;
 }
 
 }