Update ConstrainedWindowViews appearance according to mock

chrome/browser/ui/views/tab_modal_confirm_dialog_views.cc

Index: chrome/browser/ui/views/tab_modal_confirm_dialog_views.cc
diff --git a/chrome/browser/ui/views/tab_modal_confirm_dialog_views.cc b/chrome/browser/ui/views/tab_modal_confirm_dialog_views.cc
index b78a6422f02952c5e53e91d55389e4904968ae24..e99975c6f60ee813bdd99cc682b82d450f8e530c 100644
--- a/chrome/browser/ui/views/tab_modal_confirm_dialog_views.cc
+++ b/chrome/browser/ui/views/tab_modal_confirm_dialog_views.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/ui/views/tab_modal_confirm_dialog_views.h"
 
+#include "base/command_line.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/ui/browser_dialogs.h"
 #include "chrome/browser/ui/browser_list.h"
@@ -11,9 +12,11 @@
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
 #include "chrome/browser/ui/tab_modal_confirm_dialog_delegate.h"
 #include "chrome/browser/ui/views/constrained_window_views.h"
+#include "chrome/common/chrome_switches.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/views/controls/message_box_view.h"
+#include "ui/views/window/dialog_client_view.h"
 
 namespace chrome {
 
@@ -25,6 +28,29 @@ void ShowTabModalConfirmDialog(TabModalConfirmDialogDelegate* delegate,
 
 }  // namespace chrome
 
+namespace {
+const int kWebStyleUniformInset = 0;
+const int kWebStyleInterRowVerticalSpacing = 20;
+
+views::MessageBoxView::InitParams CreateMessageBoxViewInitParams(
+    const string16& message)
+{
+  views::MessageBoxView::InitParams params(message);
+
+  CommandLine* command_line = CommandLine::ForCurrentProcess();
+  if (command_line->HasSwitch(switches::kEnableFramelessConstrainedDialogs)) {
+    params.top_inset = kWebStyleUniformInset;
+    params.bottom_inset = kWebStyleUniformInset;
+    params.left_inset = kWebStyleUniformInset;
+    params.right_inset = kWebStyleUniformInset;
+
+    params.inter_row_vertical_spacing = kWebStyleInterRowVerticalSpacing;
+  }
+
+  return params;
+}
+}  // namespace
+
 //////////////////////////////////////////////////////////////////////////////
 // TabModalConfirmDialogViews, constructor & destructor:
 
@@ -33,7 +59,7 @@ TabModalConfirmDialogViews::TabModalConfirmDialogViews(
     TabContents* tab_contents)
     : delegate_(delegate),
       message_box_view_(new views::MessageBoxView(
-          views::MessageBoxView::InitParams(delegate->GetMessage()))) {
+          CreateMessageBoxViewInitParams(delegate->GetMessage()))) {
   delegate_->set_window(new ConstrainedWindowViews(tab_contents, this));
 }
 
@@ -66,6 +92,16 @@ bool TabModalConfirmDialogViews::Accept() {
   return true;
 }
 
+views::ClientView* TabModalConfirmDialogViews::CreateClientView(
+    views::Widget* widget) {
+  CommandLine* command_line = CommandLine::ForCurrentProcess();
+  if (command_line->HasSwitch(switches::kEnableFramelessConstrainedDialogs))
+    return new views::DialogClientView(
+        widget, GetContentsView(), views::DialogClientView::STYLE_WEB);
+
+  return DialogDelegate::CreateClientView(widget);
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 // TabModalConfirmDialogViews, views::WidgetDelegate implementation: