Add support for sending a USB SET_CONFIGURATION request.

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

Index: chrome/browser/devtools/device/usb/android_usb_browsertest.cc
diff --git a/chrome/browser/devtools/device/usb/android_usb_browsertest.cc b/chrome/browser/devtools/device/usb/android_usb_browsertest.cc
index 06a8e20b670463e0f57c1694a5414551c2f06aa9..c2bd81188f748618a2856d32b5b231764201a85c 100644
--- a/chrome/browser/devtools/device/usb/android_usb_browsertest.cc
+++ b/chrome/browser/devtools/device/usb/android_usb_browsertest.cc
@@ -176,6 +176,8 @@ class MockUsbDeviceHandle : public UsbDeviceHandle {
 
   virtual void Close() override { device_ = nullptr; }
 
+  bool SetConfiguration(int configuration_value) override { return true; }
+
   bool ClaimInterface(int interface_number) override {
     if (device_->claimed_interfaces_.find(interface_number) !=
         device_->claimed_interfaces_.end())
@@ -471,8 +473,8 @@ class MockUsbDevice : public UsbDevice {
     return new MockUsbDeviceHandle<T>(this);
   }
 
-  virtual const UsbConfigDescriptor& GetConfiguration() override {
-    return config_desc_;
+  virtual const UsbConfigDescriptor* GetConfiguration() override {
+    return &config_desc_;
   }
 
   virtual bool GetManufacturer(base::string16* manufacturer) override {