fix GridLayout::CreatePanel for new style dialogs

ui/views/controls/message_box_view.cc

Index: ui/views/controls/message_box_view.cc
diff --git a/ui/views/controls/message_box_view.cc b/ui/views/controls/message_box_view.cc
index 34c8705ddd5a2bed304778611ea1df435571e10b..0e5708fcceddc95ade83637bfd961060647c3e37 100644
--- a/ui/views/controls/message_box_view.cc
+++ b/ui/views/controls/message_box_view.cc
@@ -66,14 +66,8 @@ MessageBoxView::InitParams::InitParams(const string16& message)
     : options(NO_OPTIONS),
       message(message),
       message_width(kDefaultMessageWidth),
-      top_inset(kPanelVertMargin),
-      bottom_inset(kPanelVertMargin),
-      left_inset(kPanelHorizMargin),
-      right_inset(kPanelHorizMargin),
       inter_row_vertical_spacing(kRelatedControlVerticalSpacing),
-      clipboard_source_tag()
-{
-}
+      clipboard_source_tag() {}
 
 MessageBoxView::InitParams::~InitParams() {
 }
@@ -195,10 +189,6 @@ void MessageBoxView::Init(const InitParams& params) {
     prompt_field_->SetText(params.default_prompt);
   }
 
-  top_inset_ = params.top_inset;
-  bottom_inset_ = params.bottom_inset;
-  left_inset_ = params.left_inset;
-  right_inset_ = params.right_inset;
   inter_row_vertical_spacing_ = params.inter_row_vertical_spacing;
   source_tag_ = params.clipboard_source_tag;
 
@@ -208,7 +198,6 @@ void MessageBoxView::Init(const InitParams& params) {
 void MessageBoxView::ResetLayoutManager() {
   // Initialize the Grid Layout Manager used for this dialog box.
   GridLayout* layout = GridLayout::CreatePanel(this);
-  layout->SetInsets(top_inset_, bottom_inset_, left_inset_, right_inset_);
   SetLayoutManager(layout);
 
   gfx::Size icon_size;