[RenderText] Added chrome os exclusion from doesntClip test

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 2708 matching lines @@
                                   kTestSize + string_size.height(),
                                   kCanvasSize.width(), kTestSize);
     }
     {
       SCOPED_TRACE("TextDoesntClip Left Side");
 #if defined(OS_WIN)
       // TODO(dschuyler): On Windows XP the Unicode test draws to the left edge
       // as if it is ignoring the SetDisplayRect shift by kTestSize.  This
       // appears to be a preexisting issue that wasn't revealed by the prior
       // unit tests.
-#elif defined(OS_MACOSX)
-      // TODO(dschuyler): On Windows (non-XP) and Mac smoothing draws left of
-      // text.  This appears to be a preexisting issue that wasn't revealed by
-      // the prior unit tests.
+#elif defined(OS_MACOSX) || defined(OS_CHROMEOS)
+      // TODO(dschuyler): On Windows (non-XP), Chrome OS and Mac smoothing draws
+      // left of text.  This appears to be a preexisting issue that wasn't
+      // revealed by the prior unit tests.
       rect_buffer.EnsureSolidRect(SK_ColorWHITE, 0, kTestSize, kTestSize - 1,
                                   string_size.height());
 #else
       rect_buffer.EnsureSolidRect(SK_ColorWHITE, 0, kTestSize, kTestSize,
                                   string_size.height());
 #endif
     }
     {
       SCOPED_TRACE("TextDoesntClip Right Side");
 #if !defined(OS_MACOSX)
@@ skipping 79 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