Color the ink drop ripple and hover effects based on theming.

ui/views/controls/button/custom_button.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/custom_button.h"
 
 #include "ui/accessibility/ax_view_state.h"
 #include "ui/events/event.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/keycodes/keyboard_codes.h"
 #include "ui/gfx/animation/throb_animation.h"
+#include "ui/gfx/color_palette.h"
 #include "ui/gfx/screen.h"
 #include "ui/views/animation/ink_drop_delegate.h"
 #include "ui/views/animation/ink_drop_hover.h"
 #include "ui/views/controls/button/blue_button.h"
 #include "ui/views/controls/button/checkbox.h"
 #include "ui/views/controls/button/image_button.h"
 #include "ui/views/controls/button/label_button.h"
 #include "ui/views/controls/button/menu_button.h"
 #include "ui/views/controls/button/radio_button.h"
 #include "ui/views/widget/widget.h"
@@ skipping 301 matching lines @@
 void CustomButton::VisibilityChanged(View* starting_from, bool visible) {
   if (state_ == STATE_DISABLED)
     return;
   SetState(visible && ShouldEnterHoveredState() ? STATE_HOVERED : STATE_NORMAL);
 }
 
 scoped_ptr<InkDropHover> CustomButton::CreateInkDropHover() const {
   return ShouldShowInkDropHover() ? Button::CreateInkDropHover() : nullptr;
 }
 
+SkColor CustomButton::GetInkDropBaseColor() const {
+  return ink_drop_base_color_;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // CustomButton, gfx::AnimationDelegate implementation:
 
 void CustomButton::AnimationProgressed(const gfx::Animation* animation) {
   SchedulePaint();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // CustomButton, protected:
 
 CustomButton::CustomButton(ButtonListener* listener)
     : Button(listener),
       state_(STATE_NORMAL),
       hover_animation_(this),
       animate_on_state_change_(true),
       is_throbbing_(false),
       triggerable_event_flags_(ui::EF_LEFT_MOUSE_BUTTON),
       request_focus_on_press_(true),
       ink_drop_delegate_(nullptr),
       notify_action_(NOTIFY_ON_RELEASE),
       has_ink_drop_action_on_click_(false),
-      ink_drop_action_on_click_(InkDropState::QUICK_ACTION) {
+      ink_drop_action_on_click_(InkDropState::QUICK_ACTION),
+      ink_drop_base_color_(gfx::kPlaceholderColor) {
   hover_animation_.SetSlideDuration(kHoverFadeDurationMs);
 }
 
 void CustomButton::StateChanged() {
 }
 
 bool CustomButton::IsTriggerableEvent(const ui::Event& event) {
   return event.type() == ui::ET_GESTURE_TAP_DOWN ||
          event.type() == ui::ET_GESTURE_TAP ||
          (event.IsMouseEvent() &&
@@ skipping 52 matching lines @@
   if (ink_drop_delegate())
     ink_drop_delegate()->OnAction(views::InkDropState::HIDDEN);
   Button::OnClickCanceled(event);
 }
 
 bool CustomButton::ShouldShowInkDropHover() const {
   return enabled() && IsMouseHovered() && !InDrag();
 }
 
 }  // namespace views