mojo::Callback -> base::Callback

chrome/browser/ui/android/usb_chooser_dialog_android.cc

 // Copyright 2016 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/android/usb_chooser_dialog_android.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 118 matching lines @@
       Profile* profile =
           Profile::FromBrowserContext(web_contents->GetBrowserContext());
       UsbChooserContext* chooser_context =
           UsbChooserContextFactory::GetForProfile(profile);
       chooser_context->GrantDevicePermission(
           render_frame_host_->GetLastCommittedURL().GetOrigin(),
           embedding_origin, device->guid());
 
       device->RequestPermission(
           base::Bind(&OnDevicePermissionRequestComplete, device, callback_));
-      callback_.reset();  // Reset |callback_| so that it is only run once.
+      callback_.Reset();  // Reset |callback_| so that it is only run once.
 
       Java_UsbChooserDialog_closeDialog(base::android::AttachCurrentThread(),
                                         java_dialog_.obj());
       RecordWebUsbChooserClosure(
           device->serial_number().empty()
               ? WEBUSB_CHOOSER_CLOSED_EPHEMERAL_PERMISSION_GRANTED
               : WEBUSB_CHOOSER_CLOSED_PERMISSION_GRANTED);
       return;
     }
   }
 }
 
 void UsbChooserDialogAndroid::Cancel() {
+  DCHECK(!callback_.is_null());
   callback_.Run(nullptr);
-  callback_.reset();  // Reset |callback_| so that it is only run once.
+  callback_.Reset();  // Reset |callback_| so that it is only run once.
   Java_UsbChooserDialog_closeDialog(base::android::AttachCurrentThread(),
                                     java_dialog_.obj());
 
   RecordWebUsbChooserClosure(devices_.size() == 0
                                  ? WEBUSB_CHOOSER_CLOSED_CANCELLED_NO_DEVICES
                                  : WEBUSB_CHOOSER_CLOSED_CANCELLED);
 }
 
 void UsbChooserDialogAndroid::OnItemSelected(
     JNIEnv* env,
@@ skipping 73 matching lines @@
 
   return device::FindInWebUsbAllowedOrigins(
       device->webusb_allowed_origins(),
       render_frame_host_->GetLastCommittedURL().GetOrigin());
 }
 
 // static
 bool UsbChooserDialogAndroid::Register(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }