fix platform bb10 compilation

platform/bb10/os_bb10.cpp

@@ -29,7 +29,6 @@
 #include "os_bb10.h"
 
 #include "drivers/gles2/rasterizer_gles2.h"
-#include "drivers/gles1/rasterizer_gles1.h"
 #include "servers/visual/visual_server_raster.h"
 #include "core/os/dir_access.h"
 
@@ -605,6 +604,9 @@ String OSBB10::get_data_dir() const {
 	return data_dir;
 };
 
+Size2 OSBB10::get_window_size() const {
+	return Vector2(default_videomode.width, default_videomode.height);
+}
 
 OSBB10::OSBB10() {
 

platform/bb10/os_bb10.h

@@ -32,6 +32,7 @@
 #include "os/input.h"
 #include "drivers/unix/os_unix.h"
 #include "os/main_loop.h"
+#include "main/input_default.h"
 #include "servers/physics/physics_server_sw.h"
 #include "servers/spatial_sound/spatial_sound_server_sw.h"
 #include "servers/spatial_sound_2d/spatial_sound_2d_server_sw.h"
@@ -135,6 +136,7 @@ public:
 	virtual VideoMode get_video_mode(int p_screen=0) const;
 	virtual void get_fullscreen_mode_list(List<VideoMode> *p_list,int p_screen=0) const;
 
+	virtual Size2 get_window_size() const;
 	virtual String get_name();
 	virtual MainLoop *get_main_loop() const;