mash: Migrate some misc ShelfLayoutManager deps to ash common.

ash/wm/window_animations.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 "ash/wm/window_animations.h"
 
 #include <math.h>
 #include <algorithm>
 #include <utility>
 #include <vector>
@@ skipping 60 matching lines @@
                                      const gfx::RectF& old_bounds,
                                      const gfx::Rect& new_bounds) {
   if (::wm::WindowAnimationsDisabled(window))
     return base::TimeDelta();
 
   int old_area = static_cast<int>(old_bounds.width() * old_bounds.height());
   int new_area = new_bounds.width() * new_bounds.height();
   int max_area = std::max(old_area, new_area);
   // Avoid divide by zero.
   if (max_area == 0)
-    return base::TimeDelta::FromMilliseconds(kCrossFadeDurationMS);
+    return base::TimeDelta::FromMilliseconds(wm::kCrossFadeDurationMS);
 
   int delta_area = std::abs(old_area - new_area);
   // If the area didn't change, the animation is instantaneous.
   if (delta_area == 0)
-    return base::TimeDelta::FromMilliseconds(kCrossFadeDurationMS);
+    return base::TimeDelta::FromMilliseconds(wm::kCrossFadeDurationMS);
 
   float factor = static_cast<float>(delta_area) / static_cast<float>(max_area);
   const float kRange = kCrossFadeDurationMaxMs - kCrossFadeDurationMinMs;
   return base::TimeDelta::FromMilliseconds(
       Round64(kCrossFadeDurationMinMs + (factor * kRange)));
 }
 
 }  // namespace
 
-const int kCrossFadeDurationMS = 200;
-
 void AddLayerAnimationsForMinimize(aura::Window* window, bool show) {
   // Recalculate the transform at restore time since the launcher item may have
   // moved while the window was minimized.
   gfx::Rect bounds = window->bounds();
   gfx::Rect target_bounds = GetMinimizeAnimationTargetBoundsInScreen(window);
   target_bounds =
       ScreenUtil::ConvertRectFromScreen(window->parent(), target_bounds);
 
   float scale_x = static_cast<float>(target_bounds.width()) / bounds.width();
   float scale_y = static_cast<float>(target_bounds.height()) / bounds.height();
@@ skipping 381 matching lines @@
     case SHELF_ALIGNMENT_LEFT:
       return gfx::Rect(work_area.x(), work_area.y(), 0, 0);
     case SHELF_ALIGNMENT_RIGHT:
       return gfx::Rect(work_area.right(), work_area.y(), 0, 0);
   }
   NOTREACHED();
   return gfx::Rect();
 }
 
 }  // namespace ash