[WIP] Not for review. Zero copy.

content/common/gpu/client/gpu_channel_host.cc

Index: content/common/gpu/client/gpu_channel_host.cc
diff --git a/content/common/gpu/client/gpu_channel_host.cc b/content/common/gpu/client/gpu_channel_host.cc
index dc1a3ce23a4af0c1583d8d9754829e4ab0970d7a..bb3a06dc7301c8ebdc03fd83da1524f33eb5b4f1 100644
--- a/content/common/gpu/client/gpu_channel_host.cc
+++ b/content/common/gpu/client/gpu_channel_host.cc
@@ -47,6 +47,9 @@ bool GpuChannelHost::IsValidGpuMemoryBuffer(
     gfx::GpuMemoryBufferHandle handle) {
   switch (handle.type) {
     case gfx::SHARED_MEMORY_BUFFER:
+#if defined(OS_LINUX)
+    case gfx::INTEL_DRM_BUFFER:
+#endif
 #if defined(OS_MACOSX)
     case gfx::IO_SURFACE_BUFFER:
 #endif
@@ -290,9 +293,12 @@ int32 GpuChannelHost::ReserveTransferBufferId() {
 gfx::GpuMemoryBufferHandle GpuChannelHost::ShareGpuMemoryBufferToGpuProcess(
     gfx::GpuMemoryBufferHandle source_handle) {
   switch (source_handle.type) {
+#if defined(OS_LINUX)
+    case gfx::INTEL_DRM_BUFFER:
+#endif
     case gfx::SHARED_MEMORY_BUFFER: {
       gfx::GpuMemoryBufferHandle handle;
-      handle.type = gfx::SHARED_MEMORY_BUFFER;
+      handle.type = source_handle.type;
       handle.handle = ShareToGpuProcess(source_handle.handle);
       return handle;
     }