[WIP] Not for review. Zero copy.

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index 11a629d413a2d457870f0914fce9372962cf5201..f3cfc1290e407f1b7b07d2efbad5eab84f736f4d 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -178,6 +178,11 @@
 #include "content/common/media/media_stream_messages.h"
 #endif
 
+#if defined(OS_LINUX)
+#include "content/common/gpu/client/gpu_memory_buffer_impl_intel_drm.h"
+#include "ui/gl/gl_implementation.h"
+#endif
+
 extern bool g_exited_main_message_loop;
 
 static const char* kSiteProcessMapKeyName = "content_site_process_map";
@@ -2288,6 +2293,23 @@ void RenderProcessHostImpl::OnAllocateGpuMemoryBuffer(uint32 width,
   }
 #endif
 
+#if defined(OS_LINUX)
+  // Intel DRM implementation of gpu memory buffer is limited to EGLGLES2 as we
+  // currently depend on EGL_EXT_image_dma_buf_import to use this type of buffer
+  // on the GPU side.
+  //bool is_gl_implementation_supported_by_intel_drm =
+  //    gfx::GetGLImplementation() == gfx::kGLImplementationEGLGLES2;
+  if (GpuMemoryBufferImplIntelDRM::IsFormatSupported(internalformat)) {
+    gfx::GpuMemoryBufferHandle handle;
+    if (GpuMemoryBufferImplIntelDRM::AllocateBufferObject(
+        gfx::Size(width, height), internalformat, &handle.handle)) {
+        handle.type = gfx::INTEL_DRM_BUFFER;
+        GpuMemoryBufferAllocated(reply, handle);
+        return;
+    }
+  }
+#endif
+
   GpuMemoryBufferImpl::AllocateForChildProcess(
       gfx::Size(width, height),
       internalformat,