Implement STYLE_LOWERCASE style for Aura NativeTextfield.

ui/views/controls/textfield/native_textfield_views_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 <string>
 #include <vector>
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 355 matching lines @@
   EXPECT_STR_EQ("this is a test", model_->GetText());
   EXPECT_STR_EQ("this is a test", textfield_->text());
   EXPECT_TRUE(last_contents_.empty());
 
   EXPECT_EQ(string16(), textfield_->GetSelectedText());
   textfield_->SelectAll();
   EXPECT_STR_EQ("this is a test", textfield_->GetSelectedText());
   EXPECT_TRUE(last_contents_.empty());
 }
 
+TEST_F(NativeTextfieldViewsTest, ModelChangesTestLowerCase) {
+  InitTextfield(Textfield::STYLE_LOWERCASE);
+
+  last_contents_.clear();
+  textfield_->SetText(ASCIIToUTF16("THIS IS"));
+
+  EXPECT_STR_EQ("this is", model_->GetText());
+  EXPECT_STR_EQ("THIS IS", textfield_->text());
+  EXPECT_TRUE(last_contents_.empty());
+
+  textfield_->AppendText(ASCIIToUTF16(" A TEST"));
+  EXPECT_STR_EQ("this is a test", model_->GetText());
+  EXPECT_STR_EQ("THIS IS A TEST", textfield_->text());

[xji, 2012/02/17 22:38:24]

could you please add tests for all modified functions in NativeTextfieldViews?
UpdateText(), AppendText(), InsertText/Char(), Paste(), etc.

+  EXPECT_TRUE(last_contents_.empty());
+}
+
 TEST_F(NativeTextfieldViewsTest, KeyTest) {
   InitTextfield(Textfield::STYLE_DEFAULT);
   SendKeyEvent(ui::VKEY_C, true, false);
   EXPECT_STR_EQ("C", textfield_->text());
   EXPECT_STR_EQ("C", last_contents_);
   last_contents_.clear();
 
   SendKeyEvent(ui::VKEY_R, false, false);
   EXPECT_STR_EQ("Cr", textfield_->text());
   EXPECT_STR_EQ("Cr", last_contents_);
@@ skipping 1182 matching lines @@
 #else
   EXPECT_EQ(500U, textfield_->GetCursorPosition());
 #endif
 #endif  // !defined(OS_WIN)
 
   // Reset locale.
   base::i18n::SetICUDefaultLocale(locale);
 }
 
 }  // namespace views