Added video capture capabilities retrieval and caching to VideoCaptureManager

media/video/capture/video_capture_device.cc

 // Copyright 2013 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 "media/video/capture/video_capture_device.h"
 #include "base/strings/string_util.h"
 
 namespace media {
 
+VideoCaptureDevice::Name::Name() {}
+
+VideoCaptureDevice::Name::Name(const std::string& name, const std::string& id)
+    : device_name_(name), unique_id_(id) {}
+
+VideoCaptureDevice::Name::~Name() {}
+
 const std::string VideoCaptureDevice::Name::GetNameAndModel() const {
   const std::string model_id = GetModel();
   if (model_id.empty())
     return device_name_;
   const std::string suffix = " (" + model_id + ")";
   if (EndsWith(device_name_, suffix, true))  // |true| means case-sensitive.
     return device_name_;
   return device_name_ + suffix;
 }
 
 VideoCaptureDevice::Name*
 VideoCaptureDevice::Names::FindById(const std::string& id) {
   for (iterator it = begin(); it != end(); ++it) {
     if (it->id() == id)
       return &(*it);
   }
   return NULL;
 }
 
 VideoCaptureDevice::~VideoCaptureDevice() {}
 
 }  // namespace media