Fixing bug 188938. Adding the ability for plugins to participate in form submission. r=bzbarsky@mit.edu, sr=brendan@mozilla.org

git-svn-id: svn://10.0.0.236/trunk@170445 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/modules/plugin/base/src/ns4xPluginInstance.cpp

@@ -764,7 +764,7 @@ nsInstanceStream::~nsInstanceStream()
 ///////////////////////////////////////////////////////////////////////////////
 
 NS_IMPL_ISUPPORTS3(ns4xPluginInstance, nsIPluginInstance, nsIScriptablePlugin,
-                   nsINPRuntimePlugin)
+                   nsIPluginInstanceInternal)
 
 ///////////////////////////////////////////////////////////////////////////////
 
@@ -1545,3 +1545,22 @@ ns4xPluginInstance::GetJSObject(JSContext *cx)
 
   return obj;
 }
+
+nsresult
+ns4xPluginInstance::GetFormValue(nsAString& aValue)
+{
+  aValue.Truncate();
+
+  char *value = nsnull;
+  nsresult rv = GetValueInternal(NPPVformValue, &value);
+
+  if (NS_SUCCEEDED(rv) && value) {
+    CopyUTF8toUTF16(value, aValue);
+
+    // NPPVformValue allocates with NPN_MemAlloc(), which uses
+    // nsMemory.
+    nsMemory::Free(value);
+  }
+
+  return NS_OK;
+}