Enable <webview>.executeScript outside of Apps and Extensions [2]

extensions/browser/api/execute_code_function.cc

Index: extensions/browser/api/execute_code_function.cc
diff --git a/extensions/browser/api/execute_code_function.cc b/extensions/browser/api/execute_code_function.cc
index aebf61f46b4dd9dcec948e8cfa5326fea796cef3..ce4b29cfc2c9f68c070d35c3754cd639de4c2230 100644
--- a/extensions/browser/api/execute_code_function.cc
+++ b/extensions/browser/api/execute_code_function.cc
@@ -124,6 +124,18 @@ void ExecuteCodeFunction::DidLoadAndLocalizeFile(bool success,
   }
 }
 
+void ExecuteCodeFunction::DidLoadFileForWebUI(bool success,
+                                              const std::string& data) {
+  if (success) {
+    if (!base::IsStringUTF8(data))
+      SendResponse(false);
+    else if (!Execute(data))
+      SendResponse(false);
+  } else {
+    SendResponse(false);
+  }
+}
+
 bool ExecuteCodeFunction::Execute(const std::string& code_string) {
   ScriptExecutor* executor = GetScriptExecutor();
   if (!executor)
@@ -205,8 +217,18 @@ bool ExecuteCodeFunction::RunAsync() {
   if (!details_->file.get())
     return false;
 
-  if (!extension())
-    return false;
+  if (!extension()) {
+    bool is_success = false;
+    is_success = LoadFileForWebUI(
+        *details_->file,
+        base::Bind(&ExecuteCodeFunction::DidLoadFileForWebUI, this));
+    if (!is_success) {
+      SendResponse(false);
+      return false;
+    }
+    // Will finish asynchronously.
+    return true;
+  }
 
   resource_ = extension()->GetResource(*details_->file);