Implement inline signin with iframe

chrome/browser/ui/views/profile_chooser_view.cc

Index: chrome/browser/ui/views/profile_chooser_view.cc
diff --git a/chrome/browser/ui/views/profile_chooser_view.cc b/chrome/browser/ui/views/profile_chooser_view.cc
index 3dcf4f6bd271958c743c4457636bec4ff92bde18..c28f49d7b9c5cf7aa6a0b0980046694dd6c00fe7 100644
--- a/chrome/browser/ui/views/profile_chooser_view.cc
+++ b/chrome/browser/ui/views/profile_chooser_view.cc
@@ -6,6 +6,7 @@
 
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/extensions/extension_web_contents_observer.h"
 #include "chrome/browser/profiles/profile_info_util.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/profiles/profile_window.h"
@@ -441,6 +442,8 @@ void ProfileChooserView::ShowView(BubbleViewMode view_to_display,
     const int kMinGaiaViewHeight = 440;
     Profile* profile = browser_->profile();
     views::WebView* web_view = new views::WebView(profile);
+    extensions::ExtensionWebContentsObserver::CreateForWebContents(
+        web_view->GetWebContents());
     signin::Source source = (view_to_display == GAIA_SIGNIN_VIEW) ?
         signin::SOURCE_AVATAR_BUBBLE_SIGN_IN :
         signin::SOURCE_AVATAR_BUBBLE_ADD_ACCOUNT;