[Views] Allow dialog delegates to use a custom padding for the extra view

chrome/browser/ui/views/extensions/extension_uninstall_dialog_view.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/extension_uninstall_dialog.h"
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_util.h"
@@ skipping 63 matching lines @@
       gfx::ImageSkia* image);
   ~ExtensionUninstallDialogDelegateView() override;
 
   // Called when the ExtensionUninstallDialog has been destroyed to make sure
   // we invalidate pointers.
   void DialogDestroyed() { dialog_ = NULL; }
 
  private:
   // views::DialogDelegate:
   views::View* CreateExtraView() override;
+  bool GetExtraViewPadding(int* padding) override;
   base::string16 GetDialogButtonLabel(ui::DialogButton button) const override;
   int GetDefaultDialogButton() const override {
     // Default to accept when triggered via chrome://extensions page.
     return triggered_by_extension_ ?
         ui::DIALOG_BUTTON_CANCEL : ui::DIALOG_BUTTON_OK;
   }
   bool Accept() override;
   bool Cancel() override;
 
   // views::WidgetDelegate:
@@ skipping 102 matching lines @@
 }
 
 views::View* ExtensionUninstallDialogDelegateView::CreateExtraView() {
   if (dialog_->ShouldShowReportAbuseCheckbox()) {
     report_abuse_checkbox_ = new views::Checkbox(
         l10n_util::GetStringUTF16(IDS_EXTENSION_PROMPT_UNINSTALL_REPORT_ABUSE));
   }
   return report_abuse_checkbox_;
 }
 
+bool ExtensionUninstallDialogDelegateView::GetExtraViewPadding(int* padding) {
+  // We want a little more padding between the "report abuse" checkbox and the
+  // buttons.
+  *padding = views::kUnrelatedControlLargeHorizontalSpacing;
+  return true;
+}
+
 base::string16 ExtensionUninstallDialogDelegateView::GetDialogButtonLabel(
     ui::DialogButton button) const {
   return l10n_util::GetStringUTF16((button == ui::DIALOG_BUTTON_OK) ?
       IDS_EXTENSION_PROMPT_UNINSTALL_BUTTON : IDS_CANCEL);
 }
 
 bool ExtensionUninstallDialogDelegateView::Accept() {
   if (dialog_) {
     dialog_->ExtensionUninstallAccepted(
         report_abuse_checkbox_ && report_abuse_checkbox_->checked());
@@ skipping 52 matching lines @@
 
 }  // namespace
 
 // static
 extensions::ExtensionUninstallDialog*
 extensions::ExtensionUninstallDialog::Create(Profile* profile,
                                              gfx::NativeWindow parent,
                                              Delegate* delegate) {
   return new ExtensionUninstallDialogViews(profile, parent, delegate);
 }