Adding MimeHandlerView.

content/renderer/browser_plugin/browser_plugin.cc

Index: content/renderer/browser_plugin/browser_plugin.cc
diff --git a/content/renderer/browser_plugin/browser_plugin.cc b/content/renderer/browser_plugin/browser_plugin.cc
index 94ff36e60c5d50b1818deb046701f03da94e640f..33885c522e2c14c2f93d29a63ff05824c784b6b1 100644
--- a/content/renderer/browser_plugin/browser_plugin.cc
+++ b/content/renderer/browser_plugin/browser_plugin.cc
@@ -60,6 +60,8 @@ BrowserPlugin::BrowserPlugin(RenderViewImpl* render_view,
       visible_(true),
       auto_navigate_(auto_navigate),
       mouse_locked_(false),
+      attach_called_(false),
+      seen_src_(false),
       browser_plugin_manager_(render_view->GetBrowserPluginManager()),
       embedder_frame_url_(frame->document().url()),
       weak_ptr_factory_(this) {
@@ -265,6 +267,13 @@ void BrowserPlugin::UpdateGuestAutoSizeState(bool auto_size_enabled) {
                                            resize_guest_params));
 }
 
+void BrowserPlugin::AttachToPlugin(
+    int instance_id) {
+  attach_called_ = true;
+  pending_instance_id_ = instance_id;
+  MaybeAttach();
+}
+
 void BrowserPlugin::Attach(int guest_instance_id,
                            scoped_ptr<base::DictionaryValue> extra_params) {
   CHECK(guest_instance_id != browser_plugin::kInstanceIDNone);
@@ -861,9 +870,20 @@ void BrowserPlugin::didReceiveData(const char* data, int data_length) {
 }
 
 void BrowserPlugin::didFinishLoading() {
+  printf("html_string_: %s\n", html_string_.c_str());
   if (auto_navigate_) {
-    // TODO(lazyboy): Make |auto_navigate_| stuff work.
-    UpdateDOMAttribute(content::browser_plugin::kAttributeSrc, html_string_);
+    seen_src_ = true;
+    MaybeAttach();
+  }
+}
+
+void BrowserPlugin::MaybeAttach() {
+  printf("MaybeAttach: seen_src_ = %d, attach_called_: %d, pending: %d\n",
+      seen_src_, attach_called_, pending_instance_id_);
+  if (seen_src_ && attach_called_) {
+    base::DictionaryValue* extra_params = new base::DictionaryValue();
+    extra_params->SetString("src", html_string_);
+    Attach(pending_instance_id_, make_scoped_ptr(extra_params));
   }
 }