Own Web platform services and remove legacy web state

src/platform_web/web_platform_services.cpp

@@ -0,0 +1,61 @@
+#include "platform_web/web_platform_services.h"
+
+#include "platform_api/platform_policy.h"
+
+#include <memory>
+#include <string>
+#include <utility>
+
+#if defined(__WEB__)
+void webgl_pick_file_save(
+    const std::string& path,
+    const std::string& name,
+    std::function<void(bool)> callback);
+void webgl_sync();
+#endif
+
+namespace pp::platform::web {
+
+void WebPlatformServices::publish_exported_image(std::string_view path)
+{
+    (void)path;
+}
+
+void WebPlatformServices::flush_persistent_storage()
+{
+#if defined(__WEB__)
+    webgl_sync();
+#endif
+}
+
+[[nodiscard]] int WebPlatformServices::default_canvas_resolution()
+{
+    return pp::platform::platform_default_canvas_resolution(pp::platform::PlatformFamily::webgl);
+}
+
+void WebPlatformServices::save_prepared_file(
+    std::string_view path,
+    std::string_view suggested_name,
+    PreparedFileCallback callback)
+{
+    const std::string value(path);
+    const std::string name(suggested_name);
+#if defined(__WEB__)
+    webgl_pick_file_save(
+        value,
+        name,
+        [callback = std::move(callback), value](bool success) {
+            callback(value, success);
+        });
+#else
+    (void)name;
+    callback(value, false);
+#endif
+}
+
+[[nodiscard]] std::unique_ptr<pp::platform::WebPlatformServices> create_web_platform_services()
+{
+    return std::make_unique<WebPlatformServices>();
+}
+
+}

src/platform_web/web_platform_services.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include "platform_api/platform_services.h"
+
+#include <memory>
+#include <string_view>
+
+namespace pp::platform::web {
+
+class WebPlatformServices final : public pp::platform::WebPlatformServices {
+public:
+    void publish_exported_image(std::string_view path) override;
+    void flush_persistent_storage() override;
+    [[nodiscard]] int default_canvas_resolution() override;
+    void save_prepared_file(
+        std::string_view path,
+        std::string_view suggested_name,
+        PreparedFileCallback callback) override;
+};
+
+[[nodiscard]] std::unique_ptr<pp::platform::WebPlatformServices> create_web_platform_services();
+
+}