Move allow_character_break property to RenderText.

ui/gfx/text_constants.h

Index: ui/gfx/text_constants.h
diff --git a/ui/gfx/text_constants.h b/ui/gfx/text_constants.h
index c76adfa3a159c8a92b135c2ca45156736c547edd..2335ede1e68a5854fb88e25401fbb972202245cb 100644
--- a/ui/gfx/text_constants.h
+++ b/ui/gfx/text_constants.h
@@ -15,6 +15,26 @@ enum BreakType {
   LINE_BREAK,          // Stop cursor movement on line ends as shown on screen.
 };
 
+// Specifies the word wrapping behavior of |ElideRectangleText()| when a word

[msw, 2015/03/26 19:36:30]

nit: Consider revising the comments like this:
// Specifies the wrapping behavior when a word exceeds available display width.
// All words that are too wide will be put on a new line, and then:
enum WordWrapBehavior {
  IGNORE_LONG_WORDS,   // Overflowing word text is left on that line.
  TRUNCATE_LONG_WORDS, // Overflowing word text is truncated.
  ELIDE_LONG_WORDS,    // Overflowing word text is elided with an ellipsis.
  WRAP_LONG_WORDS,     // Overflowing word text is wrapped over multiple lines.
};

[Jun Mukai, 2015/03/26 22:47:39]

Done.

+// would exceed the available width.
+enum WordWrapBehavior {
+  // Words that are too wide will be put on a new line, but will not be
+  // truncated or elided.
+  IGNORE_LONG_WORDS,
+
+  // Words that are too wide will be put on a new line and will be truncated to
+  // the available width.
+  TRUNCATE_LONG_WORDS,
+
+  // Words that are too wide will be put on a new line and will be elided to the
+  // available width.
+  ELIDE_LONG_WORDS,
+
+  // Words that are too wide will be put on a new line and will be wrapped over
+  // multiple lines.
+  WRAP_LONG_WORDS,
+};
+
 // Horizontal text alignment modes.
 enum HorizontalAlignment {
   ALIGN_LEFT = 0, // Align the text's left edge with that of its display area.