4 files changed, 21 insertions, 0 deletions
diff --git a/chrome/common/platform_util.h b/chrome/common/platform_util.h
index 27ef5c4..3886f17 100644
--- a/chrome/common/platform_util.h
+++ b/chrome/common/platform_util.h
@@ -5,6 +5,8 @@
 #ifndef CHROME_COMMON_PLATFORM_UTIL_H_
 #define CHROME_COMMON_PLATFORM_UTIL_H_
 
+#include "base/gfx/native_widget_types.h"
+
 class FilePath;
 
 namespace platform_util {
@@ -12,6 +14,9 @@ namespace platform_util {
 // Show the given file in a file manager. If possible, select the file.
 void ShowItemInFolder(const FilePath& full_path);
 
+// Get the top level window for the native view. This can return NULL.
+gfx::NativeWindow GetTopLevel(gfx::NativeView view);
+
 }
 
 #endif  // CHROME_COMMON_PLATFORM_UTIL_H_
diff --git a/chrome/common/platform_util_linux.cc b/chrome/common/platform_util_linux.cc
index de06f04..3c0f5f6 100644
--- a/chrome/common/platform_util_linux.cc
+++ b/chrome/common/platform_util_linux.cc
@@ -4,6 +4,8 @@
 
 #include "chrome/common/platform_util.h"
 
+#include <gtk/gtk.h>
+
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/process_util.h"
@@ -25,4 +27,8 @@ void ShowItemInFolder(const FilePath& full_path) {
   base::LaunchApp(argv, no_files, false, NULL);
 }
 
+gfx::NativeWindow GetTopLevel(gfx::NativeView view) {
+  return GTK_WINDOW(gtk_widget_get_toplevel(view));
+}
+
 }  // namespace platform_util
diff --git a/chrome/common/platform_util_mac.mm b/chrome/common/platform_util_mac.mm
index ea8474d..3ee3a2f 100644
--- a/chrome/common/platform_util_mac.mm
+++ b/chrome/common/platform_util_mac.mm
@@ -13,4 +13,9 @@ void ShowItemInFolder(const FilePath& full_path) {
   NOTIMPLEMENTED();
 }
 
+gfx::NativeWindow GetTopLevel(gfx::NativeView view) {
+  NOTIMPLEMENTED();
+  return NULL;
+}
+
 }  // namespace platform_util
diff --git a/chrome/common/platform_util_win.cc b/chrome/common/platform_util_win.cc
index 217d832..16ea8c0 100644
--- a/chrome/common/platform_util_win.cc
+++ b/chrome/common/platform_util_win.cc
@@ -13,6 +13,7 @@
 
 #include "base/file_path.h"
 #include "base/file_util.h"
+#include "base/gfx/native_widget_types.h"
 #include "base/logging.h"
 #include "chrome/common/win_util.h"
 
@@ -80,4 +81,8 @@ void ShowItemInFolder(const FilePath& full_path) {
                                      highlight, NULL);
 }
 
+gfx::NativeWindow GetTopLevel(gfx::NativeView view) {
+  return GetAncestor(view, GA_ROOT);
+}
+
 }  // namespace platform_util