Fix accidental updates of host's baselines_ in Elide().

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 701 matching lines @@
 
   expected.clear();
   expected.push_back(SelectionModel(4, CURSOR_FORWARD));
   // The cursor hops over the elided text to preceeding text.
   expected.push_back(SelectionModel(1, CURSOR_FORWARD));
   expected.push_back(SelectionModel(0, CURSOR_FORWARD));
   expected.push_back(SelectionModel(0, CURSOR_BACKWARD));
   RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_RIGHT);
 }
 
+TEST_F(RenderTextTest, HarfBuzz_ElideEmail) {

[msw, 2015/03/25 23:17:09]

nit: Rename Elide[d]Email, move after ElidedText or ElidedObscuredText.

[Jun Mukai, 2015/03/26 16:34:12]

Done.

+  scoped_ptr<RenderText> render_text(RenderText::CreateInstance());
+  render_text->SetText(ASCIIToUTF16("test@example.com"));
+  const gfx::Size size = render_text->GetStringSize();
+
+  const base::string16 long_email =
+      ASCIIToUTF16("longemailaddresstest@example.com");
+  render_text->SetText(long_email);
+  render_text->SetElideBehavior(ELIDE_EMAIL);
+  render_text->SetDisplayRect(gfx::Rect(size));
+  EXPECT_GE(size.width(), render_text->GetStringSize().width());
+  EXPECT_NE(long_email, render_text->GetDisplayText());

[msw, 2015/03/25 23:17:09]

optional nit: you can remove this, the statement below is sufficient.

[Jun Mukai, 2015/03/26 16:34:12]

Done.

+  EXPECT_GT(long_email.size(), render_text->GetDisplayText().size());
+}
+
 TEST_F(RenderTextTest, GetDisplayTextDirection) {
   struct {
     const wchar_t* text;
     const base::i18n::TextDirection text_direction;
   } cases[] = {
     // Blank strings and those with no/weak directionality default to LTR.
     { L"",        base::i18n::LEFT_TO_RIGHT },
     { kWeak,      base::i18n::LEFT_TO_RIGHT },
     // Strings that begin with strong LTR characters.
     { kLtr,       base::i18n::LEFT_TO_RIGHT },
@@ skipping 2090 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