Fix GCC build for target 'all'

chrome/browser/ui/views/webshare/webshare_target_picker_view.h

Index: chrome/browser/ui/views/webshare/webshare_target_picker_view.h
diff --git a/chrome/browser/ui/views/webshare/webshare_target_picker_view.h b/chrome/browser/ui/views/webshare/webshare_target_picker_view.h
index 18464cf3759ff000f7ab2fbe7c0ef92490f669cd..22eb0f431e35c0524859dc4167c78a5f1828c080 100644
--- a/chrome/browser/ui/views/webshare/webshare_target_picker_view.h
+++ b/chrome/browser/ui/views/webshare/webshare_target_picker_view.h
@@ -22,7 +22,7 @@ namespace views {
 class TableView;
 }
 
-namespace {
+namespace test {
 class WebShareTargetPickerViewTest;
 }
 
@@ -64,7 +64,7 @@ class WebShareTargetPickerView : public views::DialogDelegateView,
 
  private:
   // For access to |table_|.
-  friend class WebShareTargetPickerViewTest;
+  friend class test::WebShareTargetPickerViewTest;
 
   views::TableView* table_ = nullptr;