app/internal/egl,app/internal/window: move Lock/Unlock methods

EGL contexts don't need locking, so their Lock and Unlock methods
are empty. Remove them and add them where necessary instead.

Signed-off-by: Elias Naur <mail@eliasnaur.com>

app/internal/egl/egl.go

@@ -107,10 +107,6 @@ func (c *Context) Functions() *gl.Functions {
 	return c.c
 }
 
-func (c *Context) Lock() {}
-
-func (c *Context) Unlock() {}
-
 func (c *Context) ReleaseSurface() {
 	if c.eglSurf == nilEGLSurface {
 		return

app/internal/window/egl_android.go

@@ -48,3 +48,7 @@ func (c *context) MakeCurrent() error {
 	}
 	return nil
 }
+
+func (c *context) Lock() {}
+
+func (c *context) Unlock() {}

app/internal/window/egl_wayland.go

@@ -67,3 +67,7 @@ func (c *context) MakeCurrent() error {
 	}
 	return c.Context.MakeCurrent()
 }
+
+func (c *context) Lock() {}
+
+func (c *context) Unlock() {}

app/internal/window/egl_windows.go

@@ -42,3 +42,7 @@ func (c *context) MakeCurrent() error {
 	c.Context.EnableVSync(true)
 	return nil
 }
+
+func (c *context) Lock() {}
+
+func (c *context) Unlock() {}

app/internal/window/egl_x11.go

@@ -44,3 +44,7 @@ func (c *x11Context) MakeCurrent() error {
 	c.Context.EnableVSync(true)
 	return nil
 }
+
+func (c *x11Context) Lock() {}
+
+func (c *x11Context) Unlock() {}