Remove some platform specific stuff from views.

ui/app_list/pagination_controller.cc

Index: ui/app_list/pagination_controller.cc
diff --git a/ui/app_list/pagination_controller.cc b/ui/app_list/pagination_controller.cc
deleted file mode 100644
index d9aabc236aff0499d33ebf5ad1200cca6762ee60..0000000000000000000000000000000000000000
--- a/ui/app_list/pagination_controller.cc
+++ /dev/null
@@ -1,88 +0,0 @@
-// Copyright 2014 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/app_list/pagination_controller.h"
-
-#include "ui/app_list/pagination_model.h"
-#include "ui/events/event.h"
-#include "ui/gfx/geometry/rect.h"
-#include "ui/gfx/geometry/vector2d.h"
-
-namespace app_list {
-
-namespace {
-
-// Constants for dealing with scroll events.
-const int kMinScrollToSwitchPage = 20;
-const int kMinHorizVelocityToSwitchPage = 800;
-
-const double kFinishTransitionThreshold = 0.33;
-
-}  // namespace
-
-PaginationController::PaginationController(PaginationModel* model,
-                                           ScrollAxis scroll_axis)
-    : pagination_model_(model), scroll_axis_(scroll_axis) {
-}
-
-bool PaginationController::OnScroll(const gfx::Vector2d& offset) {
-  int offset_magnitude;
-  if (scroll_axis_ == SCROLL_AXIS_HORIZONTAL) {
-    // If the view scrolls horizontally, both horizontal and vertical scroll
-    // events are valid (since most mouse wheels only have vertical scrolling).
-    offset_magnitude =
-        abs(offset.x()) > abs(offset.y()) ? offset.x() : offset.y();
-  } else {
-    // If the view scrolls vertically, only vertical scroll events are valid.
-    offset_magnitude = offset.y();
-  }
-
-  if (abs(offset_magnitude) > kMinScrollToSwitchPage) {
-    if (!pagination_model_->has_transition()) {
-      pagination_model_->SelectPageRelative(offset_magnitude > 0 ? -1 : 1,
-                                            true);
-    }
-    return true;
-  }
-
-  return false;
-}
-
-bool PaginationController::OnGestureEvent(const ui::GestureEvent& event,
-                                          const gfx::Rect& bounds) {
-  const ui::GestureEventDetails& details = event.details();
-  switch (event.type()) {
-    case ui::ET_GESTURE_SCROLL_BEGIN:
-      pagination_model_->StartScroll();
-      return true;
-    case ui::ET_GESTURE_SCROLL_UPDATE: {
-      float scroll = scroll_axis_ == SCROLL_AXIS_HORIZONTAL
-                         ? details.scroll_x()
-                         : details.scroll_y();
-      int width = scroll_axis_ == SCROLL_AXIS_HORIZONTAL ? bounds.width()
-                                                         : bounds.height();
-      // scroll > 0 means moving contents right or down. That is, transitioning
-      // to the previous page.
-      pagination_model_->UpdateScroll(scroll / width);
-      return true;
-    }
-    case ui::ET_GESTURE_SCROLL_END:
-      pagination_model_->EndScroll(pagination_model_->transition().progress <
-                                   kFinishTransitionThreshold);
-      return true;
-    case ui::ET_SCROLL_FLING_START: {
-      float velocity = scroll_axis_ == SCROLL_AXIS_HORIZONTAL
-                           ? details.velocity_x()
-                           : details.velocity_y();
-      pagination_model_->EndScroll(true);
-      if (fabs(velocity) > kMinHorizVelocityToSwitchPage)
-        pagination_model_->SelectPageRelative(velocity < 0 ? 1 : -1, true);
-      return true;
-    }
-    default:
-      return false;
-  }
-}
-
-}  // namespace app_list