In dialogs & dialog-like bubbles, make the escape button just close the prompt.

chrome/browser/ui/views/bookmarks/bookmark_bubble_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/ui/views/bookmarks/bookmark_bubble_view.h"
 
 #include <utility>
 
 #include "base/macros.h"
 #include "base/strings/string16.h"
@@ skipping 125 matching lines @@
     return true;
   }
   if (key_code == ui::VKEY_E && accelerator.IsAltDown()) {
     HandleButtonPressed(edit_button_);
     return true;
   }
   if (key_code == ui::VKEY_R && accelerator.IsAltDown()) {
     HandleButtonPressed(remove_button_);
     return true;
   }
-  if (key_code == ui::VKEY_ESCAPE) {
-    remove_bookmark_ = newly_bookmarked_;
-    apply_edits_ = false;
-  }
 
   return LocationBarBubbleDelegateView::AcceleratorPressed(accelerator);
 }
 
 void BookmarkBubbleView::Init() {
   remove_button_ = new views::LabelButton(this, l10n_util::GetStringUTF16(
       IDS_BOOKMARK_BUBBLE_REMOVE_BOOKMARK));
   remove_button_->SetStyle(views::Button::STYLE_BUTTON);
 
   edit_button_ = new views::LabelButton(
@@ skipping 55 matching lines @@
 
   layout->StartRow(0, cs_id);
   layout->SkipColumns(2);
   layout->AddView(remove_button_);
   layout->AddView(edit_button_);
   layout->AddView(close_button_);
 
   AddAccelerator(ui::Accelerator(ui::VKEY_RETURN, ui::EF_NONE));
   AddAccelerator(ui::Accelerator(ui::VKEY_E, ui::EF_ALT_DOWN));
   AddAccelerator(ui::Accelerator(ui::VKEY_R, ui::EF_ALT_DOWN));
-  AddAccelerator(ui::Accelerator(ui::VKEY_ESCAPE, ui::EF_NONE));
 }
 
 base::string16 BookmarkBubbleView::GetWindowTitle() const {
   return l10n_util::GetStringUTF16(newly_bookmarked_
                                        ? IDS_BOOKMARK_BUBBLE_PAGE_BOOKMARKED
                                        : IDS_BOOKMARK_BUBBLE_PAGE_BOOKMARK);
 }
 
 const char* BookmarkBubbleView::GetClassName() const {
   return "BookmarkBubbleView";
@@ skipping 23 matching lines @@
     bool newly_bookmarked)
     : LocationBarBubbleDelegateView(anchor_view, nullptr),
       observer_(observer),
       delegate_(std::move(delegate)),
       profile_(profile),
       url_(url),
       newly_bookmarked_(newly_bookmarked),
       parent_model_(BookmarkModelFactory::GetForProfile(profile_),
                     BookmarkModelFactory::GetForProfile(profile_)
                         ->GetMostRecentlyAddedUserNodeForURL(url)),
-      remove_button_(NULL),
-      edit_button_(NULL),
-      close_button_(NULL),
-      title_tf_(NULL),
-      parent_combobox_(NULL),
+      remove_button_(nullptr),
+      edit_button_(nullptr),
+      close_button_(nullptr),
+      title_tf_(nullptr),
+      parent_combobox_(nullptr),
       remove_bookmark_(false),
       apply_edits_(true) {}
 
 base::string16 BookmarkBubbleView::GetTitle() {
   BookmarkModel* bookmark_model =
       BookmarkModelFactory::GetForProfile(profile_);
   const BookmarkNode* node =
       bookmark_model->GetMostRecentlyAddedUserNodeForURL(url_);
   if (node)
     return node->GetTitle();
@@ skipping 65 matching lines @@
   if (node) {
     const base::string16 new_title = title_tf_->text();
     if (new_title != node->GetTitle()) {
       model->SetTitle(node, new_title);
       content::RecordAction(
           UserMetricsAction("BookmarkBubble_ChangeTitleInBubble"));
     }
     parent_model_.MaybeChangeParent(node, parent_combobox_->selected_index());
   }
 }