[Mojo Video Capture] Move SharedMem Tracker/BufferHandle/Factory from content to media

media/capture/video/shared_memory_buffer_tracker.cc

 // Copyright 2016 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 "content/browser/renderer_host/media/shared_memory_buffer_tracker.h"
+#include "media/capture/video/shared_memory_buffer_tracker.h"
 
 #include "base/memory/ptr_util.h"
-#include "content/browser/renderer_host/media/shared_memory_buffer_handle.h"
 #include "mojo/public/cpp/system/platform_handle.h"
 
-namespace content {
+namespace media {
 
 SharedMemoryBufferTracker::SharedMemoryBufferTracker()
     : VideoCaptureBufferTracker() {}
 
 bool SharedMemoryBufferTracker::Init(const gfx::Size& dimensions,
-                                     media::VideoPixelFormat format,
-                                     media::VideoPixelStorage storage_type,
+                                     VideoPixelFormat format,
+                                     VideoPixelStorage storage_type,
                                      base::Lock* lock) {
   DVLOG(2) << __func__ << "allocating ShMem of " << dimensions.ToString();
   set_dimensions(dimensions);
   // |dimensions| can be 0x0 for trackers that do not require memory backing.
   set_max_pixel_count(dimensions.GetArea());
   set_pixel_format(format);
   set_storage_type(storage_type);
-  mapped_size_ =
-      media::VideoCaptureFormat(dimensions, 0.0f, format, storage_type)
-          .ImageAllocationSize();
+  mapped_size_ = VideoCaptureFormat(dimensions, 0.0f, format, storage_type)
+                     .ImageAllocationSize();
   if (!mapped_size_)
     return true;
   return shared_memory_.CreateAndMapAnonymous(mapped_size_);
 }
 
-std::unique_ptr<media::VideoCaptureBufferHandle>
+std::unique_ptr<VideoCaptureBufferHandle>
 SharedMemoryBufferTracker::GetBufferHandle() {
   return base::MakeUnique<SharedMemoryBufferHandle>(this);
 }
 
 mojo::ScopedSharedBufferHandle
 SharedMemoryBufferTracker::GetHandleForTransit() {
   return mojo::WrapSharedMemoryHandle(
       base::SharedMemory::DuplicateHandle(shared_memory_.handle()),
       mapped_size_, false /* read_only */);
 }
 
-}  // namespace content
+SharedMemoryBufferHandle::SharedMemoryBufferHandle(
+    SharedMemoryBufferTracker* tracker)
+    : tracker_(tracker) {}
+
+SharedMemoryBufferHandle::~SharedMemoryBufferHandle() = default;
+
+gfx::Size SharedMemoryBufferHandle::dimensions() const {
+  return tracker_->dimensions();
+}
+
+size_t SharedMemoryBufferHandle::mapped_size() const {
+  return tracker_->mapped_size_;
+}
+
+void* SharedMemoryBufferHandle::data(int plane) {
+  DCHECK_EQ(0, plane);
+  return tracker_->shared_memory_.memory();
+}
+
+#if defined(OS_POSIX) && !defined(OS_MACOSX)
+base::FileDescriptor SharedMemoryBufferHandle::AsPlatformFile() {
+  return tracker_->shared_memory_.handle();
+}
+#endif
+
+bool SharedMemoryBufferHandle::IsBackedByVideoFrame() const {
+  return false;
+}
+
+scoped_refptr<VideoFrame> SharedMemoryBufferHandle::GetVideoFrame() {
+  return scoped_refptr<VideoFrame>();
+}
+
+}  // namespace media