Headless: Remove obsolete Mojo code and some other obsolete APIs

headless/public/headless_browser_context.h

Index: headless/public/headless_browser_context.h
diff --git a/headless/public/headless_browser_context.h b/headless/public/headless_browser_context.h
index 7f0b48ad0dcdf76c9d72386ddc89d99ba3d0c7f4..e1c71c129074d4f9747c24973c957fb33f6c62de 100644
--- a/headless/public/headless_browser_context.h
+++ b/headless/public/headless_browser_context.h
@@ -83,15 +83,6 @@ class HEADLESS_EXPORT HeadlessBrowserContext::Builder {
   // fetching for different network schemes.
   Builder& SetProtocolHandlers(ProtocolHandlerMap protocol_handlers);
 
-  // DEPRECATED. Specify JS mojo module bindings to be installed, one per mojom
-  // file. Note a single mojom file could potentially define many interfaces.
-  // |mojom_name| the name including path of the .mojom file.
-  // |js_bindings| compiletime generated javascript bindings. Typically loaded
-  // from gen/path/name.mojom.js.
-  // TODO(alexclarke): Remove this.
-  Builder& AddJsMojoBindings(const std::string& mojom_name,
-                             const std::string& js_bindings);
-
   Builder& AddTabSocketMojoBindings();
 
   // By default if you add mojo bindings, http and https are disabled because