[Textfield] Consider select all status for select all context menu

ui/views/controls/textfield/textfield_unittest.cc

 // Copyright 2014 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 "ui/views/controls/textfield/textfield.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <set>
@@ skipping 930 matching lines @@
   // Select line towards right.
   SendEndEvent(true);
 #if defined(OS_MACOSX)
   EXPECT_EQ(textfield_->text(), textfield_->GetSelectedText());
 #else
   EXPECT_STR_EQ("67 89", textfield_->GetSelectedText());
 #endif
   EXPECT_FALSE(textfield_->GetSelectedRange().is_reversed());
 }
 
+TEST_F(TextfieldTest, IsAllSelected) {
+  InitTextfield();
+  EXPECT_FALSE(textfield_->IsAllSelected());
+
+  textfield_->SetText(ASCIIToUTF16("12 34567 89"));
+  textfield_->SelectAll(false);
+  EXPECT_TRUE(textfield_->IsAllSelected());
+
+  textfield_->SetSelectionRange(gfx::Range(0, 2));
+  EXPECT_FALSE(textfield_->IsAllSelected());
+
+  textfield_->SetText(base::string16());

[Peter Kasting, 2017/04/20 00:08:30]

Maybe after this we should SelectAll(), before checking IsAllSelected().

[simonhong, 2017/04/20 13:11:51]

We don't need to that because when different text is set, previous selection is
cleared.
Anyway, this test case was removed because Textfield::IsAllSelected() doesn't
exist anymore.

+  EXPECT_FALSE(textfield_->IsAllSelected());
+}
+
 TEST_F(TextfieldTest, MoveUpDownAndModifySelection) {
   InitTextfield();
   textfield_->SetText(ASCIIToUTF16("12 34567 89"));
   textfield_->SetSelectionRange(gfx::Range(6));
 
   // Up/Down keys won't be handled except on Mac where they map to move
   // commands.
   SendKeyEvent(ui::VKEY_UP);
   EXPECT_TRUE(textfield_->key_received());
 #if defined(OS_MACOSX)
@@ skipping 2156 matching lines @@
   InitTextfield();
 
   textfield_->SetCursorEnabled(false);
   EXPECT_FALSE(test_api_->IsCursorVisible());
 
   textfield_->SetCursorEnabled(true);
   EXPECT_TRUE(test_api_->IsCursorVisible());
 }
 
 }  // namespace views