working copy of "zero_copy"

content/common/gpu/client/gpu_memory_buffer_impl_linux.cc

Index: content/common/gpu/client/gpu_memory_buffer_impl_linux.cc
===================================================================
--- content/common/gpu/client/gpu_memory_buffer_impl_linux.cc	(revision 277402)
+++ content/common/gpu/client/gpu_memory_buffer_impl_linux.cc	(working copy)
@@ -4,6 +4,7 @@
 
 #include "content/common/gpu/client/gpu_memory_buffer_impl.h"
 
+#include "content/common/gpu/client/gpu_memory_buffer_impl_dma_buf.h"
 #include "content/common/gpu/client/gpu_memory_buffer_impl_shm.h"
 
 namespace content {
@@ -57,6 +58,14 @@
 
       return buffer.PassAs<GpuMemoryBufferImpl>();
     }
+    case gfx::DMA_BUFFER: {
+      scoped_ptr<GpuMemoryBufferImplDMABuf> buffer(
+          new GpuMemoryBufferImplDMABuf(size, internalformat));
+      if (!buffer->Initialize(handle))
+        return scoped_ptr<GpuMemoryBufferImpl>();
+
+      return buffer.PassAs<GpuMemoryBufferImpl>();
+    }
     default:
       return scoped_ptr<GpuMemoryBufferImpl>();
   }