views textfield: Handle ctrl and shift modifiers for Backspace and Delete

views/controls/textfield/native_textfield_views_unittest.cc

Index: views/controls/textfield/native_textfield_views_unittest.cc
diff --git a/views/controls/textfield/native_textfield_views_unittest.cc b/views/controls/textfield/native_textfield_views_unittest.cc
index efa7eb12c32dbd72957fd3cf76afcf73096b15be..08e9a3931cd85188bd014b36e461458ff9af9063 100644
--- a/views/controls/textfield/native_textfield_views_unittest.cc
+++ b/views/controls/textfield/native_textfield_views_unittest.cc
@@ -250,6 +250,17 @@ TEST_F(NativeTextfieldViewsTest, InsertionDeletionTest) {
   textfield_->SelectAll();
   SendKeyEventToTextfieldViews(app::VKEY_K);
   EXPECT_STR_EQ("k", textfield_->text());
+
+  // Delete the previous word from cursor.
+  textfield_->SetText(ASCIIToUTF16("one two three four"));
+  SendKeyEventToTextfieldViews(app::VKEY_END);
+  SendKeyEventToTextfieldViews(app::VKEY_BACK, false, true, false);
+  EXPECT_STR_EQ("one two three ", textfield_->text());
+
+  // Delete upto the beginning of the buffer from cursor.
+  SendKeyEventToTextfieldViews(app::VKEY_LEFT, false, true, false);
+  SendKeyEventToTextfieldViews(app::VKEY_BACK, true, true, false);
+  EXPECT_STR_EQ("three ", textfield_->text());
 }
 
 TEST_F(NativeTextfieldViewsTest, PasswordTest) {