views: implement width snapping for DialogDelegateViews

chrome/browser/ui/views/desktop_capture/desktop_media_picker_views.cc

Index: chrome/browser/ui/views/desktop_capture/desktop_media_picker_views.cc
diff --git a/chrome/browser/ui/views/desktop_capture/desktop_media_picker_views.cc b/chrome/browser/ui/views/desktop_capture/desktop_media_picker_views.cc
index 8667fee5fdbdefa0deff8ac226903beb92c52267..a129926d59b75be98b2d44f346ca1f533f36be0d 100644
--- a/chrome/browser/ui/views/desktop_capture/desktop_media_picker_views.cc
+++ b/chrome/browser/ui/views/desktop_capture/desktop_media_picker_views.cc
@@ -274,15 +274,15 @@ void DesktopMediaPickerDialogView::DetachParent() {
   parent_ = nullptr;
 }
 
-gfx::Size DesktopMediaPickerDialogView::GetPreferredSize() const {
-  static const size_t kDialogViewWidth = 600;
-  return gfx::Size(kDialogViewWidth, GetHeightForWidth(kDialogViewWidth));
-}
-
 ui::ModalType DesktopMediaPickerDialogView::GetModalType() const {
   return ui::MODAL_TYPE_CHILD;
 }
 
+gfx::Size DesktopMediaPickerDialogView::GetUnsnappedPreferredSize() const {
+  static const size_t kDialogViewWidth = 600;

[Peter Kasting, 2017/03/30 00:35:34]

Another case that needs a bug in the spreadsheet and a TODO here referencing
that bug

+  return gfx::Size(kDialogViewWidth, GetHeightForWidth(kDialogViewWidth));
+}
+
 base::string16 DesktopMediaPickerDialogView::GetWindowTitle() const {
   return l10n_util::GetStringUTF16(IDS_DESKTOP_MEDIA_PICKER_TITLE);
 }