refactor: rename the atom directory to shell

shell/browser/atom_navigation_throttle.cc

@@ -0,0 +1,44 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/browser/atom_navigation_throttle.h"
+
+#include "atom/browser/api/atom_api_web_contents.h"
+#include "content/public/browser/navigation_handle.h"
+
+namespace atom {
+
+AtomNavigationThrottle::AtomNavigationThrottle(
+    content::NavigationHandle* navigation_handle)
+    : content::NavigationThrottle(navigation_handle) {}
+
+AtomNavigationThrottle::~AtomNavigationThrottle() {}
+
+const char* AtomNavigationThrottle::GetNameForLogging() {
+  return "AtomNavigationThrottle";
+}
+
+content::NavigationThrottle::ThrottleCheckResult
+AtomNavigationThrottle::WillRedirectRequest() {
+  auto* handle = navigation_handle();
+  auto* contents = handle->GetWebContents();
+  if (!contents) {
+    NOTREACHED();
+    return PROCEED;
+  }
+
+  auto api_contents =
+      atom::api::WebContents::From(v8::Isolate::GetCurrent(), contents);
+  if (api_contents.IsEmpty()) {
+    // No need to emit any event if the WebContents is not available in JS.
+    return PROCEED;
+  }
+
+  if (api_contents->EmitNavigationEvent("will-redirect", handle)) {
+    return CANCEL;
+  }
+  return PROCEED;
+}
+
+}  // namespace atom