Clean up calls like "gfx::Rect(0, 0, size().width(), size().height()".

The caller can use the much shorter "gfx::Rect(size())", since gfx::Rect
has a constructor that just takes a Size.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/2204001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@48283 0039d316-1c4b-4281-b951-d872f2087c98
void DraggedTabGtk::AnimationProgressed(const Animation* animation) {
  int delta_x = (animation_end_bounds_.x() - animation_start_bounds_.x());
  int x = animation_start_bounds_.x() +
      static_cast<int>(delta_x * animation->GetCurrentValue());
  int y = animation_end_bounds_.y();
  gdk_window_move(container_->window, x, y);
}

void DraggedTabGtk::AnimationProgressed(const Animation* animation) {
  int delta_x = (animation_end_bounds_.x() - animation_start_bounds_.x());
  int x = animation_start_bounds_.x() +
      static_cast<int>(delta_x * animation->GetCurrentValue());
  int y = animation_end_bounds_.y();
  gdk_window_move(container_->window, x, y);
}
