Use interface associations to check function permissions.

chrome/browser/devtools/device/usb/android_usb_browsertest.cc

 // Copyright 2014 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 <stddef.h>
 #include <stdint.h>
 #include <algorithm>
 #include <utility>
 
 #include "base/containers/scoped_ptr_hash_map.h"
@@ skipping 212 matching lines @@
           broken_ ? device::USB_TRANSFER_ERROR : device::USB_TRANSFER_COMPLETED;
       base::ThreadTaskRunnerHandle::Get()->PostTask(
           FROM_HERE, base::Bind(callback, status, nullptr, 0));
       ProcessQueries();
     } else if (direction == device::USB_DIRECTION_INBOUND) {
       queries_.push(Query(callback, buffer, length));
       ProcessQueries();
     }
   }
 
-  bool FindInterfaceByEndpoint(uint8_t endpoint_address,
-                               uint8_t* interface_number) {
+  const UsbInterfaceDescriptor* FindInterfaceByEndpoint(
+      uint8_t endpoint_address) {
     NOTIMPLEMENTED();
-    return false;
+    return nullptr;
   }
 
   template <class D>
   void append(D data) {
     std::copy(reinterpret_cast<char*>(&data),
               (reinterpret_cast<char*>(&data)) + sizeof(D),
               std::back_inserter(output_buffer_));
   }
 
   // Copied from AndroidUsbDevice::Checksum
@@ skipping 546 matching lines @@
   EXPECT_EQ(2, listener.invoked_);
   EXPECT_EQ(listener.invoked_ - 1, scheduler_invoked_);
   EXPECT_TRUE(base::MessageLoop::current()->IsIdleForTesting());
 }
 
 IN_PROC_BROWSER_TEST_F(AndroidUsbTraitsTest, TestDeviceCounting) {
   MockCountListenerForCheckingTraits listener(adb_bridge_);
   adb_bridge_->AddDeviceCountListener(&listener);
   runner_->Run();
 }