Render string sequences of more than 64k characters.

Source/platform/text/BidiResolver.h

Index: Source/platform/text/BidiResolver.h
diff --git a/Source/platform/text/BidiResolver.h b/Source/platform/text/BidiResolver.h
index 356f89488517ce6c997c074e375deb1df0867f32..9a9ae025947d17721fedcd568733984b91bea47f 100644
--- a/Source/platform/text/BidiResolver.h
+++ b/Source/platform/text/BidiResolver.h
@@ -336,8 +336,15 @@ void BidiResolver<Iterator, Run>::appendRun(BidiRunList<Run>& runs)
             endOffset = m_endOfRunAtEndOfLine.offset();
         }
 
-        if (endOffset >= startOffset)
-            runs.addRun(new Run(startOffset, endOffset + 1, context(), m_direction));
+        endOffset += 1;

[eae, 2015/01/15 20:07:07]

I know you just moved this but a comment explaining why we need to increase the
offset would be useful.

[Daniel Bratell, 2015/01/16 13:47:32]

Done.

+        while (startOffset < endOffset) {
+            unsigned end = endOffset;
+            const int limit = USHRT_MAX; // Use a small number in Debug to keep the code well tested?
+            if (end - startOffset > limit)
+                end = startOffset + limit;
+            runs.addRun(new Run(startOffset, end, context(), m_direction));
+            startOffset = end;
+        }
 
         m_eor.increment();
         m_sor = m_eor;