Implement STYLE_LOWERCASE style for Aura NativeTextfield.

ui/views/controls/textfield/native_textfield_views_unittest.cc

Index: ui/views/controls/textfield/native_textfield_views_unittest.cc
diff --git a/ui/views/controls/textfield/native_textfield_views_unittest.cc b/ui/views/controls/textfield/native_textfield_views_unittest.cc
index b694ff42ccfdac41047f21af00c570c0f53b2458..ed3c9f642ca484dfa62e43f7dc7d71666b97b4f2 100644
--- a/ui/views/controls/textfield/native_textfield_views_unittest.cc
+++ b/ui/views/controls/textfield/native_textfield_views_unittest.cc
@@ -361,6 +361,51 @@ TEST_F(NativeTextfieldViewsTest, ModelChangesTest) {
   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());
+  EXPECT_TRUE(last_contents_.empty());
+}
+
+TEST_F(NativeTextfieldViewsTest, ModelChangesTestLowerCaseI18n) {
+  InitTextfield(Textfield::STYLE_LOWERCASE);
+
+  last_contents_.clear();
+  // Zenkaku Japanese "ABCabc"
+  textfield_->SetText(WideToUTF16(L"\xFF21\xFF22\xFF23\xFF41\xFF42\xFF43"));
+  // Zenkaku Japanese "abcabc"
+  EXPECT_EQ(WideToUTF16(L"\xFF41\xFF42\xFF43\xFF41\xFF42\xFF43"),
+            model_->GetText());
+  // Zenkaku Japanese "ABCabc"
+  EXPECT_EQ(WideToUTF16(L"\xFF21\xFF22\xFF23\xFF41\xFF42\xFF43"),
+            textfield_->text());
+  EXPECT_TRUE(last_contents_.empty());
+
+  // Zenkaku Japanese "XYZxyz"
+  textfield_->AppendText(WideToUTF16(L"\xFF38\xFF39\xFF3A\xFF58\xFF59\xFF5A"));
+  // Zenkaku Japanese "abcabcxyzxyz"
+  EXPECT_EQ(WideToUTF16(L"\xFF41\xFF42\xFF43\xFF41\xFF42\xFF43"
+                        L"\xFF58\xFF59\xFF5A\xFF58\xFF59\xFF5A"),
+            model_->GetText());
+  // Zenkaku Japanese "ABCabcXYZxyz"
+  EXPECT_EQ(WideToUTF16(L"\xFF21\xFF22\xFF23\xFF41\xFF42\xFF43"
+                        L"\xFF38\xFF39\xFF3A\xFF58\xFF59\xFF5A"),
+            textfield_->text());
+  EXPECT_TRUE(last_contents_.empty());
+
+  // TODO(kochi): Add locale-specific lower-case conversion tests.

[msw, 2012/04/09 18:29:24]

Did you mean to address this before landing?

[kochi, 2012/04/10 07:38:11]

I'm not an expert of locale-specific case conversion, but
as far as I know there is Turkish "I" conversion case that
gets tricky.

Added a case.

+}
+
 TEST_F(NativeTextfieldViewsTest, KeyTest) {
   InitTextfield(Textfield::STYLE_DEFAULT);
   SendKeyEvent(ui::VKEY_C, true, false);