[Signin Error Dialog] (2/3) Added handlers and UI constructors

chrome/browser/ui/webui/signin/signin_utils.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/ui/webui/signin/get_auth_frame.h"
+#include "chrome/browser/ui/webui/signin/signin_utils.h"
 
 #include <set>
 
 #include "base/bind.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/browser_finder.h"
 #include "components/guest_view/browser/guest_view_manager.h"
 #include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_ui.h"
 #include "extensions/browser/guest_view/web_view/web_view_guest.h"
 
 namespace {
 
 bool AddWebContentsToSet(std::set<content::WebContents*>* frame_set,
                          const std::string& web_view_name,
                          content::WebContents* web_contents) {
   auto* web_view = extensions::WebViewGuest::FromWebContents(web_contents);
   if (web_view && web_view->name() == web_view_name)
     frame_set->insert(web_contents);
@@ skipping 22 matching lines @@
         web_contents,
         base::Bind(&AddWebContentsToSet, &frame_set, parent_frame_name));
   }
   DCHECK_GE(1U, frame_set.size());
   if (!frame_set.empty())
     return *frame_set.begin();
 
   return nullptr;
 }
 
+Browser* GetDesktopBrowser(content::WebUI* web_ui) {
+  Browser* browser =
+      chrome::FindBrowserWithWebContents(web_ui->GetWebContents());
+  if (!browser)
+    browser = chrome::FindLastActiveWithProfile(Profile::FromWebUI(web_ui));
+  return browser;
+}
+
+void SetInitializedModalHeight(content::WebUI* web_ui,
+                               const base::ListValue* args) {
+  double height;
+  bool success = args->GetDouble(0, &height);
+  DCHECK(success);
+
+  Browser* browser = GetDesktopBrowser(web_ui);
+  DCHECK(browser);
+  browser->signin_view_controller()->SetModalSigninHeight(
+      static_cast<int>(height));
+}
+
 }  // namespace signin