Add SetProminent() to MdTextButton to create blue buttons.

ui/views/controls/button/toggle_button.cc

 // Copyright 2016 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/toggle_button.h"
 
 #include "third_party/skia/include/core/SkDrawLooper.h"
 #include "third_party/skia/include/core/SkPaint.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/color_palette.h"
@@ skipping 58 matching lines @@
 void ToggleButton::OnPaint(gfx::Canvas* canvas) {
   SkAlpha blend =
       static_cast<SkAlpha>(SK_AlphaOPAQUE * slide_animation_.GetCurrentValue());
 
   // Track.
   gfx::RectF track_rect(GetContentsBounds());
   SkPaint track_paint;
   track_paint.setAntiAlias(true);
   const SkColor track_on_color =
       SkColorSetA(GetNativeTheme()->GetSystemColor(
-                      ui::NativeTheme::kColorId_CallToActionColor),
+                      ui::NativeTheme::kColorId_ProminentButtonColor),
                   0xFF / 2);
   track_paint.setColor(
       color_utils::AlphaBlend(track_on_color, kTrackOffColor, blend));
   canvas->DrawRoundRect(track_rect, track_rect.height() / 2, track_paint);
 
   // Thumb.
   gfx::Rect thumb_bounds = GetThumbBounds();
   SkPaint thumb_paint;
   std::vector<gfx::ShadowValue> shadows;
   shadows.emplace_back(gfx::Vector2d(0, 1), 4.f,
                        SkColorSetA(SK_ColorBLACK, 0x99));
   thumb_paint.setLooper(gfx::CreateShadowDrawLooperCorrectBlur(shadows));
   thumb_paint.setStyle(SkPaint::kFill_Style);
   thumb_paint.setAntiAlias(true);
   const SkColor thumb_on_color = GetNativeTheme()->GetSystemColor(
-      ui::NativeTheme::kColorId_CallToActionColor);
+      ui::NativeTheme::kColorId_ProminentButtonColor);
   // TODO(estade): get this color from the theme?
   const SkColor thumb_off_color = SK_ColorWHITE;
   thumb_paint.setColor(
       color_utils::AlphaBlend(thumb_on_color, thumb_off_color, blend));
   canvas->DrawCircle(gfx::RectF(thumb_bounds).CenterPoint(),
                      thumb_bounds.height() / 2.f, thumb_paint);
 }
 
 void ToggleButton::NotifyClick(const ui::Event& event) {
   SetIsOn(!is_on(), true);
   CustomButton::NotifyClick(event);
 }
 
 void ToggleButton::OnNativeThemeChanged(const ui::NativeTheme* theme) {
   SchedulePaint();
 }
 
 std::unique_ptr<InkDropRipple> ToggleButton::CreateInkDropRipple() const {
   return CreateDefaultInkDropRipple(GetThumbBounds().CenterPoint());
 }
 
 SkColor ToggleButton::GetInkDropBaseColor() const {
   return is_on()
              ? GetNativeTheme()->GetSystemColor(
-                   ui::NativeTheme::kColorId_CallToActionColor)
+                   ui::NativeTheme::kColorId_ProminentButtonColor)
              : kTrackOffColor;
 }
 
 bool ToggleButton::ShouldShowInkDropHighlight() const {
   return false;
 }
 
 void ToggleButton::AnimationProgressed(const gfx::Animation* animation) {
   if (animation == &slide_animation_)
     SchedulePaint();
   else
     CustomButton::AnimationProgressed(animation);
 }
 
 gfx::Rect ToggleButton::GetThumbBounds() const {
   gfx::Rect thumb_bounds = GetLocalBounds();
   thumb_bounds.Inset(gfx::Insets(kThumbVerticalMargin, kThumbHorizontalMargin));
   thumb_bounds.set_x(thumb_bounds.x() +
                      slide_animation_.GetCurrentValue() *
                          (thumb_bounds.width() - thumb_bounds.height()));
   // The thumb is a circle, so the width should match the height.
   thumb_bounds.set_width(thumb_bounds.height());
   thumb_bounds.set_x(GetMirroredXForRect(thumb_bounds));
   return thumb_bounds;
 }
 
 }  // namespace views