Stubs for missing implementations that use SDL

in order to get rid of this:

error: invalid new-expression of abstract class type ‘LLWindowSDL’
    fullscreen, clearBg, enable_vsync, use_gl, ignore_pixel_depth, fsaa_samples);
note: because the following virtual functions are pure within ‘LLWindowSDL’:
 class LLWindowSDL : public LLWindow
       ^~~~~~~~~~~
     virtual void* createSharedContext() = 0;
                   ^~~~~~~~~~~~~~~~~~~
     virtual void makeContextCurrent(void* context) = 0;
                  ^~~~~~~~~~~~~~~~~~
     virtual void destroySharedContext(void* context) = 0;
                  ^~~~~~~~~~~~~~~~~~~~
     virtual void toggleVSync(bool enable_vsync) = 0;
                  ^~~~~~~~~~~

The window has been relying on some, mostly GL context related, methods.
These methods are declared abstract, so for now they're implemented
using member functions that do nothing, return nothing.

1 files changed, 4 insertions, 0 deletions

diff --git a/indra/llwindow/llwindowsdl.h b/indra/llwindow/llwindowsdl.h
index 7193e6f45a..57885907b4 100644
--- a/indra/llwindow/llwindowsdl.h
+++ b/indra/llwindow/llwindowsdl.h
@@ -66,6 +66,10 @@ public:
 	/*virtual*/ BOOL setSizeImpl(LLCoordScreen size);
 	/*virtual*/ BOOL setSizeImpl(LLCoordWindow size);
 	/*virtual*/ BOOL switchContext(BOOL fullscreen, const LLCoordScreen &size, BOOL disable_vsync, const LLCoordScreen * const posp = NULL);
+	/*virtual*/ void *createSharedContext();
+	/*virtual*/ void makeContextCurrent(void* context);
+	/*virtual*/ void destroySharedContext(void* context);
+	/*virtual*/ void toggleVSync(bool enable_vsync);
 	/*virtual*/ BOOL setCursorPosition(LLCoordWindow position);
 	/*virtual*/ BOOL getCursorPosition(LLCoordWindow *position);
 	/*virtual*/ void showCursor();