gpu: Add support for multiple GpuMemoryBuffer types.

This is a re-factoring of the GpuMemoryBuffer framework to support
different run-time buffer implementations.

This also adds a GpuMemoryBuffer type that is backed by standard
shared memory. This allows us exercise more code in unit tests.

TEST=gpu_unittests --gtest_filter=MockGpuMemoryBufferTest.Lifecycle
BUG=261649

Review URL: https://chromiumcodereview.appspot.com/20536006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@215508 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 37 insertions, 0 deletions

diff --git a/ui/gl/gl_image_shm.h b/ui/gl/gl_image_shm.h
new file mode 100644
index 0000000..70233f9
--- /dev/null
+++ b/ui/gl/gl_image_shm.h
@@ -0,0 +1,37 @@
+// 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.
+
+#ifndef UI_GL_GL_IMAGE_SHM_H_
+#define UI_GL_GL_IMAGE_SHM_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "ui/gl/gl_image.h"
+
+namespace gfx {
+
+class GL_EXPORT GLImageShm : public GLImage {
+ public:
+  explicit GLImageShm(gfx::Size size);
+
+  bool Initialize(gfx::GpuMemoryBufferHandle buffer);
+
+  // Overridden from GLImage:
+  virtual void Destroy() OVERRIDE;
+  virtual gfx::Size GetSize() OVERRIDE;
+  virtual bool BindTexImage() OVERRIDE;
+  virtual void ReleaseTexImage() OVERRIDE;
+
+ protected:
+  virtual ~GLImageShm();
+
+ private:
+  scoped_ptr<base::SharedMemory> shared_memory_;
+  gfx::Size size_;
+
+  DISALLOW_COPY_AND_ASSIGN(GLImageShm);
+};
+
+}  // namespace gfx
+
+#endif  // UI_GL_GL_IMAGE_SHM_H_