Improve extension uninstall flow

chrome/browser/ui/cocoa/extensions/extension_uninstall_dialog_cocoa.mm

 // Copyright (c) 2011 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"
 
 #import <Cocoa/Cocoa.h>
 
 #include <string>
 
@@ skipping 31 matching lines @@
     ExtensionUninstallDialog::Delegate* delegate)
     : ExtensionUninstallDialog(profile, browser, delegate) {}
 
 ExtensionUninstallDialogCocoa::~ExtensionUninstallDialogCocoa() {}
 
 void ExtensionUninstallDialogCocoa::Show() {
   NSAlert* alert = [[[NSAlert alloc] init] autorelease];
 
   NSButton* continueButton = [alert addButtonWithTitle:l10n_util::GetNSString(
       IDS_EXTENSION_PROMPT_UNINSTALL_BUTTON)];
-  // Clear the key equivalent (currently 'Return') because cancel is the default
-  // button.
-  [continueButton setKeyEquivalent:@""];
-
   NSButton* cancelButton = [alert addButtonWithTitle:l10n_util::GetNSString(
       IDS_CANCEL)];
-  [cancelButton setKeyEquivalent:@"\r"];
+  // Default to accept when triggered via chrome://extensions page.
+  if (triggering_extension_) {
+    [continueButton setKeyEquivalent:@""];
+    [cancelButton setKeyEquivalent:@"\r"];
+  }
 
   [alert setMessageText:base::SysUTF8ToNSString(GetHeadingText())];
   [alert setAlertStyle:NSWarningAlertStyle];
   [alert setIcon:gfx::NSImageFromImageSkia(icon_)];
 
   if ([alert runModal] == NSAlertFirstButtonReturn)
     delegate_->ExtensionUninstallAccepted();
   else
     delegate_->ExtensionUninstallCanceled();
 }
 
 }  // namespace
 
 // static
 ExtensionUninstallDialog* ExtensionUninstallDialog::Create(
     Profile* profile,
     Browser* browser,
     Delegate* delegate) {
   return new ExtensionUninstallDialogCocoa(profile, browser, delegate);
 }