Add Emulation domain

Signed-off-by: Francis Bouvier <francis@lightpanda.io>

src/cdp/cdp.zig

@@ -8,6 +8,7 @@ const target = @import("target.zig").target;
 const page = @import("page.zig").page;
 const log = @import("log.zig").log;
 const runtime = @import("runtime.zig").runtime;
+const emulation = @import("emulation.zig").emulation;
 
 pub const Error = error{
     UnknonwDomain,
@@ -31,6 +32,7 @@ const Domains = enum {
     Page,
     Log,
     Runtime,
+    Emulation,
 };
 
 // The caller is responsible for calling `free` on the returned slice.
@@ -62,6 +64,7 @@ pub fn do(
         .Page => page(alloc, id, iter.next().?, &scanner, ctx),
         .Log => log(alloc, id, iter.next().?, &scanner, ctx),
         .Runtime => runtime(alloc, id, iter.next().?, &scanner, ctx),
+        .Emulation => emulation(alloc, id, iter.next().?, &scanner, ctx),
     };
 }
 

src/cdp/emulation.zig

@@ -0,0 +1,34 @@
+const std = @import("std");
+
+const server = @import("../server.zig");
+const Ctx = server.Cmd;
+const result = @import("cdp.zig").result;
+const getParams = @import("cdp.zig").getParams;
+const stringify = @import("cdp.zig").stringify;
+
+const EmulationMethods = enum {
+    setEmulatedMedia,
+};
+
+pub fn emulation(
+    alloc: std.mem.Allocator,
+    id: u64,
+    action: []const u8,
+    scanner: *std.json.Scanner,
+    ctx: *Ctx,
+) ![]const u8 {
+    const method = std.meta.stringToEnum(EmulationMethods, action) orelse
+        return error.UnknownMethod;
+    return switch (method) {
+        .setEmulatedMedia => setEmulatedMedia(alloc, id, scanner, ctx),
+    };
+}
+
+fn setEmulatedMedia(
+    alloc: std.mem.Allocator,
+    id: u64,
+    _: *std.json.Scanner,
+    _: *Ctx,
+) ![]const u8 {
+    return result(alloc, id, null, null);
+}