Remove InlineLoginHandlerChromeOS and exclude InlineLoginUI from CrOS build.

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

Index: chrome/browser/ui/webui/signin/get_auth_frame.cc
diff --git a/chrome/browser/ui/webui/signin/get_auth_frame.cc b/chrome/browser/ui/webui/signin/get_auth_frame.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f5705a299978da8b6e019b339a5c9d7edd28903a
--- /dev/null
+++ b/chrome/browser/ui/webui/signin/get_auth_frame.cc
@@ -0,0 +1,54 @@
+// 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 <set>
+
+#include "base/bind.h"
+#include "components/guest_view/browser/guest_view_manager.h"
+#include "content/public/browser/web_contents.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);
+  return false;
+}
+
+}  // namespace
+
+namespace signin {
+
+content::RenderFrameHost* GetAuthFrame(content::WebContents* web_contents,
+                                       const std::string& parent_frame_name) {
+  content::WebContents* auth_web_contents =
+      GetAuthFrameWebContents(web_contents, parent_frame_name);
+  return auth_web_contents ? auth_web_contents->GetMainFrame() : nullptr;
+}
+
+content::WebContents* GetAuthFrameWebContents(
+    content::WebContents* web_contents,
+    const std::string& parent_frame_name) {
+  std::set<content::WebContents*> frame_set;
+  auto* manager = guest_view::GuestViewManager::FromBrowserContext(
+      web_contents->GetBrowserContext());
+  if (manager) {
+    manager->ForEachGuest(
+        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;
+}
+
+}  // namespace signin