Cleanup: move WebRTC related files from chrome/browser/media to chrome/browser/media/webrtc/

chrome/browser/media/desktop_streams_registry.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 "chrome/browser/media/desktop_streams_registry.h"
-
-#include "base/base64.h"
-#include "base/location.h"
-#include "base/macros.h"
-#include "base/time/time.h"
-#include "content/public/browser/browser_thread.h"
-#include "crypto/random.h"
-
-namespace {
-
-const int kStreamIdLengthBytes = 16;
-
-const int kApprovedStreamTimeToLiveSeconds = 10;
-
-std::string GenerateRandomStreamId() {
-  char buffer[kStreamIdLengthBytes];
-  crypto::RandBytes(buffer, arraysize(buffer));
-  std::string result;
-  base::Base64Encode(base::StringPiece(buffer, arraysize(buffer)),
-                     &result);
-  return result;
-}
-
-}  // namespace
-
-DesktopStreamsRegistry::DesktopStreamsRegistry() {}
-DesktopStreamsRegistry::~DesktopStreamsRegistry() {}
-
-std::string DesktopStreamsRegistry::RegisterStream(
-    int render_process_id,
-    int render_frame_id,
-    const GURL& origin,
-    const content::DesktopMediaID& source,
-    const std::string& extension_name) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-
-  std::string id = GenerateRandomStreamId();
-  DCHECK(approved_streams_.find(id) == approved_streams_.end());
-  ApprovedDesktopMediaStream& stream = approved_streams_[id];
-  stream.render_process_id = render_process_id;
-  stream.render_frame_id = render_frame_id;
-  stream.origin = origin;
-  stream.source = source;
-  stream.extension_name = extension_name;
-
-  content::BrowserThread::PostDelayedTask(
-      content::BrowserThread::UI, FROM_HERE,
-      base::Bind(&DesktopStreamsRegistry::CleanupStream,
-                 base::Unretained(this), id),
-      base::TimeDelta::FromSeconds(kApprovedStreamTimeToLiveSeconds));
-
-  return id;
-}
-
-content::DesktopMediaID DesktopStreamsRegistry::RequestMediaForStreamId(
-    const std::string& id,
-    int render_process_id,
-    int render_frame_id,
-    const GURL& origin,
-    std::string* extension_name) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-
-  StreamsMap::iterator it = approved_streams_.find(id);
-
-  // Verify that if there is a request with the specified ID it was created for
-  // the same origin and the same renderer.
-  if (it == approved_streams_.end() ||
-      render_process_id != it->second.render_process_id ||
-      render_frame_id != it->second.render_frame_id ||
-      origin != it->second.origin) {
-    return content::DesktopMediaID();
-  }
-
-  content::DesktopMediaID result = it->second.source;
-  *extension_name = it->second.extension_name;
-  approved_streams_.erase(it);
-  return result;
-}
-
-void DesktopStreamsRegistry::CleanupStream(const std::string& id) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  approved_streams_.erase(id);
-}
-
-DesktopStreamsRegistry::ApprovedDesktopMediaStream::ApprovedDesktopMediaStream()
-    : render_process_id(-1), render_frame_id(-1) {}