Use shared D3D9 texture to transport the compositor's backing buffer to the browser...

ui/gfx/gl/gl_surface_egl.cc

 // Copyright (c) 2011 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 "ui/gfx/gl/gl_surface_egl.h"
 
 #include "build/build_config.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "third_party/angle/include/EGL/egl.h"
@@ skipping 289 matching lines @@
 
 bool PbufferGLSurfaceEGL::SwapBuffers() {
   NOTREACHED() << "Attempted to call SwapBuffers on a PbufferGLSurfaceEGL.";
   return false;
 }
 
 gfx::Size PbufferGLSurfaceEGL::GetSize() {
   return size_;
 }
 
+bool PbufferGLSurfaceEGL::Resize(const gfx::Size& size) {
+  if (size == size_)
+    return true;
+
+  Destroy();
+  size_ = size;
+  return Initialize();
+}
+
 EGLSurface PbufferGLSurfaceEGL::GetHandle() {
   return surface_;
 }
 
+void* PbufferGLSurfaceEGL::GetShareHandle() {
+  const char* extensions = eglQueryString(g_display, EGL_EXTENSIONS);
+  if (!strstr(extensions, "EGL_ANGLE_query_surface_pointer"))
+    return NULL;
+
+  void* handle;
+  if (!eglQuerySurfacePointerANGLE(g_display,
+                                   GetHandle(),
+                                   EGL_D3D_TEXTURE_2D_SHARE_HANDLE_ANGLE,
+                                   &handle)) {
+    return NULL;
+  }
+
+  return handle;
+}
+
 }  // namespace gfx