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
gfx::Rect DraggedTabGtk::bounds() const {
  gint x, y, width, height;
  gtk_window_get_position(GTK_WINDOW(container_), &x, &y);
  gtk_window_get_size(GTK_WINDOW(container_), &width, &height);
  return gfx::Rect(x, y, width, height);
}

gfx::Rect DraggedTabGtk::bounds() const {
  gint x, y, width, height;
  gtk_window_get_position(GTK_WINDOW(container_), &x, &y);
  gtk_window_get_size(GTK_WINDOW(container_), &width, &height);
  return gfx::Rect(x, y, width, height);
}
