Use webrtc::DesktopCapturer for screen capturer implementation.

media/video/capture/screen/shared_buffer_unittest.cc

-// Copyright (c) 2012 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 "base/process_util.h"
-#include "media/video/capture/screen/shared_buffer.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-const uint32 kBufferSize = 4096;
-const int kPattern = 0x12345678;
-
-const int kIdZero = 0;
-const int kIdOne = 1;
-
-namespace media {
-
-TEST(SharedBufferTest, Basic) {
-  scoped_refptr<SharedBuffer> source(new SharedBuffer(kBufferSize));
-
-  // Make sure that the buffer is allocated, the size is recorded correctly and
-  // its ID is reset.
-  EXPECT_TRUE(source->ptr() != NULL);
-  EXPECT_EQ(source->id(), kIdZero);
-  EXPECT_EQ(source->size(), kBufferSize);
-
-  // See if setting of the ID works.
-  source->set_id(kIdOne);
-  EXPECT_EQ(source->id(), kIdOne);
-
-  base::SharedMemoryHandle copied_handle;
-  EXPECT_TRUE(source->ShareToProcess(
-      base::GetCurrentProcessHandle(), &copied_handle));
-
-  scoped_refptr<SharedBuffer> dest(
-      new SharedBuffer(kIdZero, copied_handle, kBufferSize));
-
-  // Make sure that the buffer is allocated, the size is recorded correctly and
-  // its ID is reset.
-  EXPECT_TRUE(dest->ptr() != NULL);
-  EXPECT_EQ(dest->id(), kIdZero);
-  EXPECT_EQ(dest->size(), kBufferSize);
-
-  // Verify that the memory contents are the same for the two buffers.
-  int* source_ptr = reinterpret_cast<int*>(source->ptr());
-  *source_ptr = kPattern;
-  int* dest_ptr = reinterpret_cast<int*>(dest->ptr());
-  EXPECT_EQ(*source_ptr, *dest_ptr);
-
-  // Check that the destination buffer is still mapped even when the source
-  // buffer is destroyed.
-  source = NULL;
-  EXPECT_EQ(0x12345678, *dest_ptr);
-}
-
-}  // namespace media