Change ChooserController::Observer to ChooserController::View

chrome/browser/usb/usb_chooser_controller.cc

 // Copyright 2015 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/usb/usb_chooser_controller.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 131 matching lines @@
       NEW_FOREGROUND_TAB, ui::PAGE_TRANSITION_AUTO_TOPLEVEL,
       false /* is_renderer_initialized */));
 }
 
 void UsbChooserController::OnDeviceAdded(
     scoped_refptr<device::UsbDevice> device) {
   if (DisplayDevice(device)) {
     const base::string16& device_name = device->product_string();
     devices_.push_back(std::make_pair(device, device_name));
     ++device_name_map_[device_name];
-    if (observer())
-      observer()->OnOptionAdded(devices_.size() - 1);
+    if (view())
+      view()->OnOptionAdded(devices_.size() - 1);
   }
 }
 
 void UsbChooserController::OnDeviceRemoved(
     scoped_refptr<device::UsbDevice> device) {
   for (auto it = devices_.begin(); it != devices_.end(); ++it) {
     if (it->first == device) {
       size_t index = it - devices_.begin();
       DCHECK_GT(device_name_map_[it->second], 0);
       if (--device_name_map_[it->second] == 0)
         device_name_map_.erase(it->second);
       devices_.erase(it);
-      if (observer())
-        observer()->OnOptionRemoved(index);
+      if (view())
+        view()->OnOptionRemoved(index);
       return;
     }
   }
 }
 
 // Get a list of devices that can be shown in the chooser bubble UI for
 // user to grant permsssion.
 void UsbChooserController::GotUsbDeviceList(
     const std::vector<scoped_refptr<device::UsbDevice>>& devices) {
   for (const auto& device : devices) {
     if (DisplayDevice(device)) {
       const base::string16& device_name = device->product_string();
       devices_.push_back(std::make_pair(device, device_name));
       ++device_name_map_[device_name];
     }
   }
-  if (observer())
-    observer()->OnOptionsInitialized();
+  if (view())
+    view()->OnOptionsInitialized();
 }
 
 bool UsbChooserController::DisplayDevice(
     scoped_refptr<device::UsbDevice> device) const {
   return device::UsbDeviceFilter::MatchesAny(device, filters_) &&
          (base::CommandLine::ForCurrentProcess()->HasSwitch(
               switches::kDisableWebUsbSecurity) ||
           device::FindInWebUsbAllowedOrigins(
               device->webusb_allowed_origins(),
               render_frame_host_->GetLastCommittedURL().GetOrigin()));
 }