Moving src/webrtc into src/.

In order to eliminate the WebRTC Subtree mirror in Chromium, 
WebRTC is moving the content of the src/webrtc directory up
to the src/ directory.

NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
TBR=tommi@webrtc.org

Bug: chromium:611808
Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38
Reviewed-on: https://webrtc-review.googlesource.com/1560
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19845}

modules/desktop_capture/win/dxgi_texture_mapping.cc

@@ -0,0 +1,57 @@
+/*
+ *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "webrtc/modules/desktop_capture/win/dxgi_texture_mapping.h"
+
+#include <comdef.h>
+#include <DXGI.h>
+#include <DXGI1_2.h>
+
+#include "webrtc/rtc_base/checks.h"
+#include "webrtc/rtc_base/logging.h"
+
+namespace webrtc {
+
+DxgiTextureMapping::DxgiTextureMapping(IDXGIOutputDuplication* duplication)
+    : duplication_(duplication) {
+  RTC_DCHECK(duplication_);
+}
+
+DxgiTextureMapping::~DxgiTextureMapping() = default;
+
+bool DxgiTextureMapping::CopyFromTexture(
+    const DXGI_OUTDUPL_FRAME_INFO& frame_info,
+    ID3D11Texture2D* texture) {
+  RTC_DCHECK_GT(frame_info.AccumulatedFrames, 0);
+  RTC_DCHECK(texture);
+  *rect() = {0};
+  _com_error error = duplication_->MapDesktopSurface(rect());
+  if (error.Error() != S_OK) {
+    *rect() = {0};
+    LOG(LS_ERROR) << "Failed to map the IDXGIOutputDuplication to a bitmap, "
+                     "error "
+                  << error.ErrorMessage() << ", code " << error.Error();
+    return false;
+  }
+
+  return true;
+}
+
+bool DxgiTextureMapping::DoRelease() {
+  _com_error error = duplication_->UnMapDesktopSurface();
+  if (error.Error() != S_OK) {
+    LOG(LS_ERROR) << "Failed to unmap the IDXGIOutputDuplication, error "
+                  << error.ErrorMessage() << ", code " << error.Error();
+    return false;
+  }
+  return true;
+}
+
+}  // namespace webrtc