add crypto module password dialog view and test.

chrome/browser/ui/crypto_module_password_dialog.cc

+// 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/ui/crypto_module_password_dialog.h"
+
+#include "base/basictypes.h"
+#include "base/bind.h"
+#include "base/synchronization/waitable_event.h"
+#include "base/utf_string_conversions.h"
+#include "crypto/crypto_module_blocking_password_delegate.h"
+#include "content/browser/browser_thread.h"
+#include "googleurl/src/gurl.h"
+#include "grit/generated_resources.h"
+#include "ui/base/l10n/l10n_util.h"
+
+#if defined(OS_WIN) || defined(TOOLKIT_VIEWS)

[Greg Spencer (Chromium), 2011/10/05 23:41:16]

It seems to me that you don't need the "defined(OS_WIN)" part of this: the
headers are views specific, and if TOOLKIT_VIEWS isn't defined on Windows, it
will fail anyhow.

[alicet1, 2011/10/06 22:04:08]

Done.

+#include "chrome/browser/ui/crypto_module_password_dialog_view.h"
+#include "views/widget/widget.h"
+#endif
+
+namespace {
+
+class CryptoModuleBlockingDialogDelegate
+    : public crypto::CryptoModuleBlockingPasswordDelegate {
+ public:
+  CryptoModuleBlockingDialogDelegate(browser::CryptoModulePasswordReason reason,
+                                     const std::string& server)
+      : event_(false, false),
+        reason_(reason),
+        server_(server),
+        password_(),

[Greg Spencer (Chromium), 2011/10/05 23:41:16]

No need for this: it'll get initialized regardless.

[alicet1, 2011/10/06 22:04:08]

Done.

+        cancelled_(false) {
+  }
+
+  ~CryptoModuleBlockingDialogDelegate() {
+    password_.replace(0, password_.size(), password_.size(), 0);
+  }
+
+  // crypto::CryptoModuleBlockingDialogDelegate implementation.
+  virtual std::string RequestPassword(const std::string& slot_name, bool retry,
+                                      bool* cancelled) {
+    DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::UI));
+    DCHECK(!event_.IsSignaled());
+    event_.Reset();
+
+    if (BrowserThread::PostTask(
+            BrowserThread::UI, FROM_HERE,
+            base::Bind(&CryptoModuleBlockingDialogDelegate::ShowDialog,
+                       // We block on event_ until the task completes, so
+                       // there's no need to ref-count.
+                       base::Unretained(this),
+                       slot_name,
+                       retry))) {
+      event_.Wait();
+    }
+    *cancelled = cancelled_;
+    return password_;
+  }
+
+ private:
+  void ShowDialog(const std::string& slot_name, bool retry) {
+    DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+    ShowCryptoModulePasswordDialog(
+        slot_name, retry, reason_, server_,
+        base::Bind(&CryptoModuleBlockingDialogDelegate::GotPassword,
+                   base::Unretained(this)));

[Greg Spencer (Chromium), 2011/10/05 23:41:16]

Maybe a similar comment here about why it doesn't need to be ref-counted.

[alicet1, 2011/10/06 22:04:08]

Done.

+  }
+  void GotPassword(const char* password) {
+    if (password)
+      password_ = password;
+    else
+      cancelled_ = true;
+    event_.Signal();
+  }
+  base::WaitableEvent event_;
+  browser::CryptoModulePasswordReason reason_;
+  std::string server_;
+  std::string password_;
+  bool cancelled_;
+
+  DISALLOW_COPY_AND_ASSIGN(CryptoModuleBlockingDialogDelegate);
+};
+}  // namespace
+
+namespace browser {
+
+void ShowCryptoModulePasswordDialog(
+    const std::string& slot_name,
+    bool retry,
+    CryptoModulePasswordReason reason,
+    const std::string& server,
+    const CryptoModulePasswordCallback& callback) {
+#if defined(OS_WIN) || defined(TOOLKIT_VIEWS)

[Greg Spencer (Chromium), 2011/10/05 23:41:16]

Again, I don't think you need OS_WIN here.

[alicet1, 2011/10/06 22:04:08]

Done.

+  (new CryptoModulePasswordDialogView(
+      slot_name, reason, server, callback))->GetWidget()->Show();
+#endif
+}
+
+crypto::CryptoModuleBlockingPasswordDelegate*
+    NewCryptoModuleBlockingDialogDelegate(
+        CryptoModulePasswordReason reason,
+        const std::string& server) {
+  return new CryptoModuleBlockingDialogDelegate(reason, server);
+}
+}  // namespace browser