Move gfx::ElideText functionality 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/memory/scoped_ptr.h"
@@ skipping 1249 matching lines @@
 #endif  // defined(OS_WIN)
 
 TEST_F(RenderTextTest, StringSizeSanity) {
   scoped_ptr<RenderText> render_text(RenderText::CreateInstance());
   render_text->SetText(UTF8ToUTF16("Hello World"));
   const Size string_size = render_text->GetStringSize();
   EXPECT_GT(string_size.width(), 0);
   EXPECT_GT(string_size.height(), 0);
 }
 
+TEST_F(RenderTextTest, StringSizeLongStrings) {
+  scoped_ptr<RenderText> render_text(RenderText::CreateInstance());
+  Size previous_string_size;
+  for (size_t length = 10; length < 1000000; length *= 10) {
+    render_text->SetText(base::string16(length, 'a'));
+    const Size string_size = render_text->GetStringSize();
+    EXPECT_GT(string_size.width(), previous_string_size.width());
+    EXPECT_GT(string_size.height(), 0);
+    previous_string_size = string_size;
+  }
+}
+
 // TODO(asvitkine): This test fails because PlatformFontMac uses point font
 //                  sizes instead of pixel sizes like other implementations.
 #if !defined(OS_MACOSX)
 TEST_F(RenderTextTest, StringSizeEmptyString) {
   // Ascent and descent of Arial and Symbol are different on most platforms.
   const FontList font_list("Arial,Symbol, 16px");
   scoped_ptr<RenderText> render_text(RenderText::CreateInstance());
   render_text->SetFontList(font_list);
   render_text->SetDisplayRect(Rect(0, 0, 0, font_list.GetHeight()));
 
@@ skipping 754 matching lines @@
   for (size_t i = 0; i < arraysize(kTestStrings); ++i) {
     render_text->SetText(WideToUTF16(kTestStrings[i]));
     render_text->EnsureLayout();
 
     for (size_t j = 0; j < render_text->text().length(); ++j)
       EXPECT_FALSE(render_text->GetGlyphBounds(j).is_empty());
   }
 }
 
 }  // namespace gfx