Consolidate content fling implementations

content/child/touch_fling_gesture_curve_unittest.cc

-  // 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.
-
-// Tests for the TouchFlingGestureCurve.
-
-#include "content/child/touch_fling_gesture_curve.h"
-
-#include "base/memory/scoped_ptr.h"
-#include "testing/gtest/include/gtest/gtest.h"
-#include "third_party/WebKit/public/platform/WebFloatPoint.h"
-#include "third_party/WebKit/public/platform/WebFloatSize.h"
-#include "third_party/WebKit/public/platform/WebGestureCurve.h"
-#include "third_party/WebKit/public/platform/WebGestureCurveTarget.h"
-#include "third_party/WebKit/public/platform/WebSize.h"
-
-using blink::WebFloatPoint;
-using blink::WebFloatSize;
-using blink::WebGestureCurve;
-using blink::WebGestureCurveTarget;
-using blink::WebSize;
-
-namespace {
-
-class MockGestureCurveTarget : public WebGestureCurveTarget {
- public:
-  virtual bool scrollBy(const WebFloatSize& delta,
-                        const WebFloatSize& velocity) override {
-    cumulative_delta_.width += delta.width;
-    cumulative_delta_.height += delta.height;
-    current_velocity_ = velocity;
-    return true;
-  }
-
-  WebFloatSize cumulative_delta() const { return cumulative_delta_; }
-  void resetCumulativeDelta() { cumulative_delta_ = WebFloatSize(); }
-
-  WebFloatSize current_velocity() const { return current_velocity_; }
-
- private:
-  WebFloatSize cumulative_delta_;
-  WebFloatSize current_velocity_;
-};
-
-} // namespace anonymous
-
-TEST(TouchFlingGestureCurve, flingCurveTouch)
-{
-  double initialVelocity = 5000;
-  MockGestureCurveTarget target;
-
-  scoped_ptr<WebGestureCurve> curve(content::TouchFlingGestureCurve::Create(
-      WebFloatPoint(initialVelocity, 0), WebSize()));
-
-  // Note: the expectations below are dependent on the curve parameters hard
-  // coded into the create call above.
-  EXPECT_TRUE(curve->apply(0, &target));
-  EXPECT_TRUE(curve->apply(0.25, &target));
-  EXPECT_NEAR(target.current_velocity().width, 1878, 1);
-  EXPECT_EQ(target.current_velocity().height, 0);
-  EXPECT_TRUE(curve->apply(0.45f, &target)); // Use non-uniform tick spacing.
-  EXPECT_TRUE(curve->apply(1, &target));
-  EXPECT_FALSE(curve->apply(1.5, &target));
-  EXPECT_NEAR(target.cumulative_delta().width, 1193, 1);
-  EXPECT_EQ(target.cumulative_delta().height, 0);
-  EXPECT_EQ(target.current_velocity().width, 0);
-  EXPECT_EQ(target.current_velocity().height, 0);
-}
-