Revert of [Mac] Preserve original selection when suggesting completions with diacritics

chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_editor_unittest.mm

Index: chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_editor_unittest.mm
diff --git a/chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_editor_unittest.mm b/chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_editor_unittest.mm
index e5e84f08474309dea66a1008c7da55ceaa1e85fe..3f1a19a7a5ac49960ea0bcf25181d006f52913a7 100644
--- a/chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_editor_unittest.mm
+++ b/chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_editor_unittest.mm
@@ -204,43 +204,6 @@
   [editor_ display];
 }
 
-// Test that the text view still responds to the private method
-// _userReplaceRange:withString: in case it's removed in future SDKs.
-TEST_F(AutocompleteTextFieldEditorTest, RespondsToUserReplaceRange) {
-  SEL selector = @selector(_userReplaceRange:withString:);
-  EXPECT_TRUE([editor_ respondsToSelector:selector]);
-}
-
-// Test that deleting with a selection that begins just before a
-// combining character works as expected.
-TEST_F(AutocompleteTextFieldEditorTest, DeletesOriginalRange) {
-  [field_ setStringValue:@"สวัสดี"];
-  [editor_ setSelectedRange:NSMakeRange(2, 4)];
-  [editor_ deleteBackward:nil];
-
-  EXPECT_TRUE([[editor_ string] isEqualToString:@"สว"]);
-}
-
-// Test that inserting text on top of a selection that begins just
-// before a combining character works as expected.
-TEST_F(AutocompleteTextFieldEditorTest, InsertTextUsesOriginalRange) {
-  [field_ setStringValue:@"สวัสดี"];
-  [editor_ setSelectedRange:NSMakeRange(2, 4)];
-  [editor_ insertText:@"น"];
-
-  EXPECT_TRUE([[editor_ string] isEqualToString:@"สวน"]);
-}
-
-// Test that |actualSelectedRange| returns original range.
-TEST_F(AutocompleteTextFieldEditorTest,
-       ActualSelectedRangeReturnsOriginalRange) {
-  [field_ setStringValue:@"สวัสดี"];
-  NSRange range = NSMakeRange(2, 4);
-  [editor_ setSelectedRange:range];
-
-  EXPECT_TRUE(NSEqualRanges(editor_.actualSelectedRange, range));
-}
-
 // Test that -paste: is correctly delegated to the observer.
 TEST_F(AutocompleteTextFieldEditorObserverTest, Paste) {
   EXPECT_CALL(field_observer_, OnPaste());