Centered flood fill style ink drop ripples on mouse/touch points.

chrome/browser/ui/views/toolbar/toolbar_button.cc

 // Copyright 2013 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 "chrome/browser/ui/views/toolbar/toolbar_button.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ skipping 202 matching lines @@
   int left_bound = display.bounds().x();
 #endif
   if (menu_position.x() < left_bound)
     menu_position.set_x(left_bound);
 
   // Make the button look depressed while the menu is open.
   SetState(STATE_PRESSED);
 
   menu_showing_ = true;
 
-  AnimateInkDrop(views::InkDropState::ACTIVATED);
+  AnimateInkDrop(views::InkDropState::ACTIVATED, nullptr /* event */);
 
   // Exit if the model is null.
   if (!model_.get())
     return;
 
   // Create and run menu.
   menu_model_adapter_.reset(new views::MenuModelAdapter(
       model_.get(),
       base::Bind(&ToolbarButton::OnMenuClosed, base::Unretained(this))));
   menu_model_adapter_->set_triggerable_event_flags(triggerable_event_flags());
   menu_runner_.reset(new views::MenuRunner(
       menu_model_adapter_->CreateMenu(),
       views::MenuRunner::HAS_MNEMONICS | views::MenuRunner::ASYNC));
   ignore_result(menu_runner_->RunMenuAt(
       GetWidget(), nullptr, gfx::Rect(menu_position, gfx::Size(0, 0)),
       views::MENU_ANCHOR_TOPLEFT, source_type));
 }
 
 void ToolbarButton::OnMenuClosed() {
-  AnimateInkDrop(views::InkDropState::DEACTIVATED);
+  AnimateInkDrop(views::InkDropState::DEACTIVATED, nullptr /* event */);
 
   menu_showing_ = false;
 
   // Need to explicitly clear mouse handler so that events get sent
   // properly after the menu finishes running. If we don't do this, then
   // the first click to other parts of the UI is eaten.
   SetMouseHandler(nullptr);
 
   // Set the state back to normal after the drop down menu is closed.
   if (state() != STATE_DISABLED)
     SetState(STATE_NORMAL);
 
   menu_runner_.reset();
   menu_model_adapter_.reset();
 }
 
 const char* ToolbarButton::GetClassName() const {
   return "ToolbarButton";
 }