Scene: Ensure classes match their header filename

Also drop some unused files.

Renamed:
- `scene/2d/navigation2d.h` -> `navigation_2d.h`
- `scene/2d/screen_button.h` -> `touch_screen_button.h`
- `scene/3d/scenario_fx.h` -> `world_environment.h`
- `scene/audio/audio_player.h` -> `audio_stream_player.h`
- `scene/resources/bit_mask.h` -> `bit_map.h`
- `scene/resources/color_ramp.h` -> `gradient.h`
- `scene/resources/shape_line_2d.h` -> `line_shape_2d.h`
- `scene/resources/scene_format_text.h` -> `resource_format_text.h`
- `scene/resources/sky_box.h` -> `sky.h`

Dropped:
- `scene/resources/bounds.h`

1 files changed, 62 insertions, 0 deletions

diff --git a/scene/resources/line_shape_2d.h b/scene/resources/line_shape_2d.h
new file mode 100644
index 0000000000..f684862025
--- /dev/null
+++ b/scene/resources/line_shape_2d.h
@@ -0,0 +1,62 @@
+/*************************************************************************/
+/*  line_shape_2d.h                                                      */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef LINE_SHAPE_2D_H
+#define LINE_SHAPE_2D_H
+
+#include "scene/resources/shape_2d.h"
+
+class LineShape2D : public Shape2D {
+	GDCLASS(LineShape2D, Shape2D);
+
+	Vector2 normal;
+	real_t d;
+
+	void _update_shape();
+
+protected:
+	static void _bind_methods();
+
+public:
+	virtual bool _edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const;
+
+	void set_normal(const Vector2 &p_normal);
+	void set_d(real_t p_d);
+
+	Vector2 get_normal() const;
+	real_t get_d() const;
+
+	virtual void draw(const RID &p_to_rid, const Color &p_color);
+	virtual Rect2 get_rect() const;
+
+	LineShape2D();
+};
+
+#endif // LINE_SHAPE_2D_H