Turn off the auto color readability of LabelButton in non-high contrast mode

ui/views/controls/button/label_button_unittest.cc

 // Copyright (c) 2012 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/button/label_button.h"
 
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/strings/utf_string_conversions.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/accessibility/ax_view_state.h"
 #include "ui/base/material_design/material_design_controller.h"
 #include "ui/base/test/material_design_controller_test_api.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/events/test/event_generator.h"
 #include "ui/gfx/canvas.h"
+#include "ui/gfx/color_utils.h"
 #include "ui/gfx/font_list.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/geometry/vector2d.h"
 #include "ui/gfx/text_utils.h"
 #include "ui/native_theme/native_theme.h"
 #include "ui/views/animation/test/ink_drop_host_view_test_api.h"
 #include "ui/views/animation/test/test_ink_drop.h"
 #include "ui/views/style/platform_style.h"
 #include "ui/views/test/views_test_base.h"
 #include "ui/views/test/widget_test.h"
@@ skipping 371 matching lines @@
   default_after->SetIsDefault(true);
   EXPECT_EQ(styled_highlight_text_color_,
             default_after->label()->enabled_color());
 
   // Test becoming default before adding to the Widget.
   TestLabelButton* default_before = AddStyledButton("OK", true);
   EXPECT_EQ(styled_highlight_text_color_,
             default_before->label()->enabled_color());
 }
 
+// Ensure the label gets the correct enabled color after
+// LabelButton::ResetColorsFromNativeTheme() is invoked.
+TEST_F(LabelButtonTest, ResetColorsFromNativeTheme) {
+  ASSERT_FALSE(color_utils::IsInvertedColorScheme());
+  ASSERT_NE(button_->label()->background_color(), SK_ColorBLACK);
+  EXPECT_EQ(themed_normal_text_color_, button_->label()->enabled_color());
+
+  button_->label()->SetBackgroundColor(SK_ColorBLACK);
+  button_->label()->SetAutoColorReadabilityEnabled(true);
+  EXPECT_NE(themed_normal_text_color_, button_->label()->enabled_color());
+
+  button_->ResetColorsFromNativeTheme();
+  EXPECT_EQ(themed_normal_text_color_, button_->label()->enabled_color());
+}
+
 // Test fixture for a LabelButton that has an ink drop configured.
 class InkDropLabelButtonTest : public ViewsTestBase {
  public:
   InkDropLabelButtonTest() {}
 
   // ViewsTestBase:
   void SetUp() override {
     base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
         switches::kTopChromeMD, switches::kTopChromeMDMaterial);
     ViewsTestBase::SetUp();
@@ skipping 54 matching lines @@
 
 // Verifies the target event handler View is the |LabelButton| and not any of
 // the child Views.
 TEST_F(InkDropLabelButtonTest, TargetEventHandler) {
   View* target_view = widget_->GetRootView()->GetEventHandlerForPoint(
       button_->bounds().CenterPoint());
   EXPECT_EQ(button_, target_view);
 }
 
 }  // namespace views