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 624 matching lines @@
   render_text->SetFontList(FontList("serif, Sans serif, 12px"));
   render_text->SetElideBehavior(ELIDE_TAIL);
   render_text->SetDisplayRect(
       Rect(0, 0, expected_render_text->GetContentWidth(), 100));
   render_text->SetObscured(true);
   render_text->SetText(WideToUTF16(L"abcdef"));
   EXPECT_EQ(WideToUTF16(L"abcdef"), render_text->text());
   EXPECT_EQ(WideToUTF16(L"**\x2026"), render_text->GetDisplayText());
 }
 
+TEST_F(RenderTextTest, ElidedEmail) {
+  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_GT(long_email.size(), render_text->GetDisplayText().size());
+}
+
 TEST_F(RenderTextTest, TruncatedText) {
   struct {
     const wchar_t* text;
     const wchar_t* display_text;
   } cases[] = {
     // Strings shorter than the truncation length should be laid out in full.
     { L"",        L""        },
     { kWeak,      kWeak      },
     { kLtr,       kLtr       },
     { kLtrRtl,    kLtrRtl    },
@@ skipping 2217 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