ozone: Implement support for CreateGpuMemoryBufferFromHandle for OzoneNativePixmap backed GMBs.

content/common/gpu/gpu_memory_buffer_factory_ozone_native_pixmap.cc

Index: content/common/gpu/gpu_memory_buffer_factory_ozone_native_pixmap.cc
diff --git a/content/common/gpu/gpu_memory_buffer_factory_ozone_native_pixmap.cc b/content/common/gpu/gpu_memory_buffer_factory_ozone_native_pixmap.cc
index c7030d1b66b02dffe8d6d7d2751ea1ddd3c69cb2..77c230068f78a93a719301e149d41bb8a8fe026f 100644
--- a/content/common/gpu/gpu_memory_buffer_factory_ozone_native_pixmap.cc
+++ b/content/common/gpu/gpu_memory_buffer_factory_ozone_native_pixmap.cc
@@ -71,8 +71,23 @@ GpuMemoryBufferFactoryOzoneNativePixmap::CreateGpuMemoryBufferFromHandle(
     const gfx::Size& size,
     gfx::BufferFormat format,
     int client_id) {
-  NOTIMPLEMENTED();
-  return gfx::GpuMemoryBufferHandle();
+  scoped_refptr<ui::NativePixmap> pixmap =
+      ui::OzonePlatform::GetInstance()
+          ->GetSurfaceFactoryOzone()
+          ->CreateNativePixmapFromHandle(handle.native_pixmap_handle);
+  if (!pixmap.get()) {
+    LOG(ERROR) << "Failed to create pixmap from handle";

[piman, 2015/10/08 23:24:36]

nit: DLOG?

[reveman, 2015/10/09 12:47:02]

Done. Here and above for consistency.

+    return gfx::GpuMemoryBufferHandle();
+  }
+
+  {
+    base::AutoLock lock(native_pixmaps_lock_);
+    NativePixmapMapKey key(id.id, client_id);
+    DCHECK(native_pixmaps_.find(key) == native_pixmaps_.end());
+    native_pixmaps_[key] = pixmap;
+  }
+
+  return handle;
 }
 
 void GpuMemoryBufferFactoryOzoneNativePixmap::DestroyGpuMemoryBuffer(