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 57101563d62d6e88c83082735891bc73161108db..4be5b6623a253f34e49f8a1e0c29ea5700c3845f 100644
--- a/ui/views/controls/textfield/native_textfield_views_unittest.cc
+++ b/ui/views/controls/textfield/native_textfield_views_unittest.cc
@@ -373,6 +373,22 @@ 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());

[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);