Don't populate URL data in WebDropData when dragging files.

This is considered a potential security issue as well, since it leaks
filesystem paths.

BUG=332579

Review URL: https://codereview.chromium.org/135633002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244538 0039d316-1c4b-4281-b951-d872f2087c98
void WebContentsViewAura::OnOverscrollUpdate(float delta_x, float delta_y) {
  if (current_overscroll_gesture_ == OVERSCROLL_NONE)
    return;

  aura::Window* target = GetWindowToAnimateForOverscroll();
  ui::ScopedLayerAnimationSettings settings(target->layer()->GetAnimator());
  settings.SetPreemptionStrategy(ui::LayerAnimator::IMMEDIATELY_SET_NEW_TARGET);
  gfx::Vector2d translate = GetTranslationForOverscroll(delta_x, delta_y);
  gfx::Transform transform;

  if (current_overscroll_gesture_ != OVERSCROLL_NORTH &&
      current_overscroll_gesture_ != OVERSCROLL_SOUTH) {
    transform.Translate(translate.x(), translate.y());
    target->SetTransform(transform);
    UpdateOverscrollWindowBrightness(delta_x);
  }

  OverscrollUpdateForWebContentsDelegate(translate.y());
}

void WebContentsViewAura::OnOverscrollUpdate(float delta_x, float delta_y) {
  if (current_overscroll_gesture_ == OVERSCROLL_NONE)
    return;

  aura::Window* target = GetWindowToAnimateForOverscroll();
  ui::ScopedLayerAnimationSettings settings(target->layer()->GetAnimator());
  settings.SetPreemptionStrategy(ui::LayerAnimator::IMMEDIATELY_SET_NEW_TARGET);
  gfx::Vector2d translate = GetTranslationForOverscroll(delta_x, delta_y);
  gfx::Transform transform;

  if (current_overscroll_gesture_ != OVERSCROLL_NORTH &&
      current_overscroll_gesture_ != OVERSCROLL_SOUTH) {
    transform.Translate(translate.x(), translate.y());
    target->SetTransform(transform);
    UpdateOverscrollWindowBrightness(delta_x);
  }

  OverscrollUpdateForWebContentsDelegate(translate.y());
}
