IWYU: add missing headers

atom/browser/api/atom_api_app.h

@@ -18,6 +18,7 @@
 #include "atom/common/native_mate_converters/callback.h"
 #include "atom/common/promise_util.h"
 #include "base/process/process_iterator.h"
+#include "base/process/process_metrics.h"
 #include "base/task/cancelable_task_tracker.h"
 #include "chrome/browser/icon_manager.h"
 #include "chrome/browser/process_singleton.h"

atom/browser/web_dialog_helper.cc

@@ -23,6 +23,7 @@
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_observer.h"
 #include "net/base/mime_util.h"
 #include "ui/shell_dialogs/selected_file_info.h"