Add GpuMemoryBuffer support for DXGI handles.

gpu/ipc/host/gpu_memory_buffer_support.cc

Index: gpu/ipc/host/gpu_memory_buffer_support.cc
diff --git a/gpu/ipc/host/gpu_memory_buffer_support.cc b/gpu/ipc/host/gpu_memory_buffer_support.cc
index 813f3395c7a8dcde3518005baf243ead3637b917..d5c3932512acb7c4d79b14b9a2dc123fddf08d4c 100644
--- a/gpu/ipc/host/gpu_memory_buffer_support.cc
+++ b/gpu/ipc/host/gpu_memory_buffer_support.cc
@@ -105,6 +105,7 @@ uint32_t GetImageTextureTarget(gfx::BufferFormat format,
     case gfx::IO_SURFACE_BUFFER:
       // IOSurface backed images require GL_TEXTURE_RECTANGLE_ARB.
       return GL_TEXTURE_RECTANGLE_ARB;
+    case gfx::DXGI_HANDLE:
     case gfx::SHARED_MEMORY_BUFFER:
     case gfx::EMPTY_BUFFER:
       break;