[Aura] Added Support for rendering software compositor frames as cc::TextureLayers.

base/memory/shared_memory_win.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 "base/memory/shared_memory.h"
 
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
 
 namespace {
@@ skipping 69 matching lines @@
 SharedMemoryHandle SharedMemory::NULLHandle() {
   return NULL;
 }
 
 // static
 void SharedMemory::CloseHandle(const SharedMemoryHandle& handle) {
   DCHECK(handle != NULL);
   ::CloseHandle(handle);
 }
 
+//static
+SharedMemoryHandle SharedMemory::DuplicateHandle(
+    const SharedMemoryHandle& handle) {
+  HANDLE result;
+  BOOL success = ::DuplicateHandle(::GetCurrentProcess(), handle,
+                                   ::GetCurrentProcess(), &result,
+                                   0, TRUE, DUPLICATE_SAME_ACCESS);
+  if (!success)
+    return NULLHandle();
+  return result;
+}
+
 // static
 size_t SharedMemory::GetHandleLimit() {
   // Rounded down from value reported here:
   // http://blogs.technet.com/b/markrussinovich/archive/2009/09/29/3283844.aspx
   return static_cast<size_t>(1 << 23);
 }
 
 bool SharedMemory::CreateAndMapAnonymous(size_t size) {
   return CreateAnonymous(size) && Map(size);
 }
@@ skipping 101 matching lines @@
     options = DUPLICATE_CLOSE_SOURCE;
     mapped_file_ = NULL;
     Unmap();
   }
 
   if (process == GetCurrentProcess() && close_self) {
     *new_handle = mapped_file;
     return true;
   }
 
-  if (!DuplicateHandle(GetCurrentProcess(), mapped_file, process,
-      &result, access, FALSE, options))
+  if (!::DuplicateHandle(GetCurrentProcess(), mapped_file, process,
+                         &result, access, FALSE, options))
     return false;
   *new_handle = result;
   return true;
 }
 
 
 void SharedMemory::Close() {
   if (memory_ != NULL) {
     UnmapViewOfFile(memory_);
     memory_ = NULL;
@@ skipping 28 matching lines @@
 void SharedMemory::Unlock() {
   DCHECK(lock_ != NULL);
   ReleaseMutex(lock_);
 }
 
 SharedMemoryHandle SharedMemory::handle() const {
   return mapped_file_;
 }
 
 }  // namespace base