Revert of Convert device::UsbConfigDescriptor and friends to structs.

device/usb/usb_device_handle_impl.cc

Index: device/usb/usb_device_handle_impl.cc
diff --git a/device/usb/usb_device_handle_impl.cc b/device/usb/usb_device_handle_impl.cc
index 2d8c69018474261eb4440ec55f6b7cfbd2a6c601..c88fb9bc5f5bc6499a33e7e312938610ff067a5f 100644
--- a/device/usb/usb_device_handle_impl.cc
+++ b/device/usb/usb_device_handle_impl.cc
@@ -15,9 +15,9 @@
 #include "base/synchronization/lock.h"
 #include "base/thread_task_runner_handle.h"
 #include "device/usb/usb_context.h"
-#include "device/usb/usb_descriptors.h"
 #include "device/usb/usb_device_impl.h"
 #include "device/usb/usb_error.h"
+#include "device/usb/usb_interface.h"
 #include "device/usb/usb_service.h"
 #include "third_party/libusb/src/libusb/libusb.h"
 
@@ -182,16 +182,18 @@
   }
 }
 
-UsbDeviceHandleImpl::UsbDeviceHandleImpl(scoped_refptr<UsbContext> context,
-                                         UsbDeviceImpl* device,
-                                         PlatformUsbDeviceHandle handle,
-                                         const UsbConfigDescriptor& config)
+UsbDeviceHandleImpl::UsbDeviceHandleImpl(
+    scoped_refptr<UsbContext> context,
+    UsbDeviceImpl* device,
+    PlatformUsbDeviceHandle handle,
+    scoped_refptr<UsbConfigDescriptor> interfaces)
     : device_(device),
       handle_(handle),
-      config_(config),
+      interfaces_(interfaces),
       context_(context),
       task_runner_(base::ThreadTaskRunnerHandle::Get()) {
   DCHECK(handle) << "Cannot create device with NULL handle.";
+  DCHECK(interfaces_.get()) << "Unable to list interfaces";
 }
 
 UsbDeviceHandleImpl::~UsbDeviceHandleImpl() {
@@ -659,23 +661,16 @@
 void UsbDeviceHandleImpl::RefreshEndpointMap() {
   DCHECK(thread_checker_.CalledOnValidThread());
   endpoint_map_.clear();
-  for (ClaimedInterfaceMap::iterator claimedIt = claimed_interfaces_.begin();
-       claimedIt != claimed_interfaces_.end();
-       ++claimedIt) {
-    for (UsbInterfaceDescriptor::Iterator ifaceIt = config_.interfaces.begin();
-         ifaceIt != config_.interfaces.end();
-         ++ifaceIt) {
-      if (ifaceIt->interface_number == claimedIt->first &&
-          ifaceIt->alternate_setting ==
-              claimedIt->second->alternate_setting()) {
-        for (UsbEndpointDescriptor::Iterator endpointIt =
-                 ifaceIt->endpoints.begin();
-             endpointIt != ifaceIt->endpoints.end();
-             ++endpointIt) {
-          endpoint_map_[endpointIt->address] = claimedIt->first;
-        }
-        break;
-      }
+  for (ClaimedInterfaceMap::iterator it = claimed_interfaces_.begin();
+       it != claimed_interfaces_.end();
+       ++it) {
+    scoped_refptr<const UsbInterfaceAltSettingDescriptor> interface_desc =
+        interfaces_->GetInterface(it->first)
+            ->GetAltSetting(it->second->alternate_setting());
+    for (size_t i = 0; i < interface_desc->GetNumEndpoints(); i++) {
+      scoped_refptr<const UsbEndpointDescriptor> endpoint =
+          interface_desc->GetEndpoint(i);
+      endpoint_map_[endpoint->GetAddress()] = it->first;
     }
   }
 }