[webview_flutter] Disable unnecessary web-engine initialization

ewk_init() and ewk_shutdown() are designed to be called only once in a process.
(If ewk_init() is called after ewk_shutdown() is called, SIGTRAP is called internally.)
ewk_init() initializes the efl module and web engine's arguments data.
The efl module is initialized by default in OS, and Arguments data is also initialized
through SetArguments() API, so calling ewk_init() is not necessary.
Therefore, temporarily comment out ewk_init() and ewk_shutdown().
It can be reverted depending on updates to chromium-efl. ewk_init();

packages/webview_flutter/CHANGELOG.md

@@ -1,3 +1,7 @@
+## NEXT
+
+* Disable unnecessary web-engine initialization.
+
 ## 0.9.3
 
 * Prevent duplicate Dispose() calls.

packages/webview_flutter/tizen/src/webview.cc

@@ -199,7 +199,7 @@ void WebView::Dispose() {
     evas_object_del(webview_instance_);
   }
 
-  ewk_shutdown();
+  // ewk_shutdown();
   disposed_ = true;
 }
 
@@ -306,7 +306,15 @@ bool WebView::InitWebView() {
   EwkInternalApiBinding::GetInstance().main.SetArguments(chromium_argc,
                                                          chromium_argv);
 
-  ewk_init();
+  // TODO(jsuya): ewk_init() and ewk_shutdown() are designed to be called only
+  // once in a process.(If ewk_init() is called after ewk_shutdown() is called,
+  // SIGTRAP is called internally.) ewk_init() initializes the efl modules and
+  // web engine's arguments data. The efl modules are initialized by default in
+  // OS, and arguments data is also initialized through SetArguments() API, so
+  // calling ewk_init() is not necessary. Therefore, temporarily comment out
+  // ewk_init() and ewk_shutdown(). It can be reverted depending on updates to
+  // chromium-efl.
+  // ewk_init();
   Ecore_Evas* evas = ecore_evas_new("wayland_egl", 0, 0, 1, 1, 0);
 
   webview_instance_ = ewk_view_add(ecore_evas_get(evas));