Add API for tweaking debug options.

Right now, it's possible to toggle the profiler. In the future
this can include options for subpixel AA, shader hot reload etc.

Author: gw3583

webrender/src/lib.rs

@@ -110,4 +110,4 @@ extern crate offscreen_gl_context;
 extern crate byteorder;
 extern crate rayon;
 
-pub use renderer::{Renderer, RendererOptions};
+pub use renderer::{Renderer, RendererOptions, RendererOption};

webrender/src/renderer.rs

@@ -1668,6 +1668,19 @@ impl Renderer {
     pub fn set_profiler_enabled(&mut self, enabled: bool) {
         self.enable_profiler = enabled;
     }
+
+    pub fn toggle_option(&mut self, option: RendererOption) {
+        match option {
+            RendererOption::Profiler => {
+                self.enable_profiler = !self.enable_profiler;
+            }
+        }
+    }
+}
+
+#[derive(Clone, Debug)]
+pub enum RendererOption {
+    Profiler,
 }
 
 #[derive(Clone, Debug)]