Move allow_character_break property to RenderText.

ui/gfx/render_text_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gfx/render_text.h"
 
 #include <algorithm>
 
 #include "base/format_macros.h"
 #include "base/i18n/break_iterator.h"
@@ skipping 2244 matching lines @@
       std::vector<base::string16> lines;
       base::SplitString(base::WideToUTF16(kTestStrings[i].text), '\n', &lines);
       ASSERT_EQ(2u, lines.size());
       int difference = (lines[0].length() - lines[1].length()) * kGlyphSize;
       EXPECT_EQ(render_text.GetAlignmentOffset(0).x() + difference,
                 render_text.GetAlignmentOffset(1).x());
     }
   }
 }
 
+TEST_F(RenderTextTest, Multiline_AllowCharacterBreak) {
+  RenderTextHarfBuzz render_text;
+  render_text.SetMultiline(true);
+  render_text.SetText(ASCIIToUTF16("foo bar baz"));
+  Size ideal_size = render_text.GetStringSize();
+
+  render_text.SetDisplayRect(
+      Rect(0, 0, ideal_size.width() / 2, ideal_size.height()));
+  render_text.SetAllowCharacterBreak(true);
+
+  Canvas canvas;
+  render_text.Draw(&canvas);
+  EXPECT_LE(2u, render_text.lines().size());
+  Range char_range = render_text.lines()[0].segments[0].char_range;
+  EXPECT_EQ(0u, char_range.start());
+  // Broken in the middle of the second word "bar".
+  EXPECT_LT(4u, char_range.end());
+  EXPECT_GT(8u, char_range.end());
+}
+
 TEST_F(RenderTextTest, NewlineWithoutMultilineFlag) {
   const wchar_t* kTestStrings[] = {
     L"abc\ndef", L"a \n b ", L"ab\n", L"a\n\nb", L"\nab", L"\n",
   };
 
   RenderTextHarfBuzz render_text;
   render_text.SetDisplayRect(Rect(200, 1000));
   Canvas canvas;
 
   for (size_t i = 0; i < arraysize(kTestStrings); ++i) {
@@ skipping 547 matching lines @@
   string_size.set_width(string_size.width() / 2);
   render_text.SetDisplayRect(gfx::Rect(string_size));
   render_text.EnsureLayout();
   CFIndex glyph_count = CTLineGetGlyphCount(render_text.line_);
   EXPECT_GT(text.size(), static_cast<size_t>(glyph_count));
   EXPECT_NE(0, glyph_count);
 }
 #endif
 
 }  // namespace gfx