exo: Add support for importing YVU_420 buffers.

components/exo/display.cc

Index: components/exo/display.cc
diff --git a/components/exo/display.cc b/components/exo/display.cc
index 719a9459e4db1f16f38427c6fdb01adf009ef7aa..78e9606ac1f82dee199b2f6c0d43719c75fc8832 100644
--- a/components/exo/display.cc
+++ b/components/exo/display.cc
@@ -60,18 +60,24 @@ std::unique_ptr<SharedMemory> Display::CreateSharedMemory(
 
 #if defined(USE_OZONE)
 std::unique_ptr<Buffer> Display::CreateLinuxDMABufBuffer(
-    base::ScopedFD fd,
     const gfx::Size& size,
     gfx::BufferFormat format,
-    int stride) {
+    const std::vector<int>& strides,
+    const std::vector<int>& offsets,
+    std::vector<base::ScopedFD>&& fds) {
   TRACE_EVENT1("exo", "Display::CreateLinuxDMABufBuffer", "size",
                size.ToString());
 
   gfx::GpuMemoryBufferHandle handle;
   handle.type = gfx::OZONE_NATIVE_PIXMAP;
-  handle.native_pixmap_handle.fds.emplace_back(
-      base::FileDescriptor(std::move(fd)));
-  handle.native_pixmap_handle.strides_and_offsets.emplace_back(stride, 0);
+  for (auto& fd : fds)
+    handle.native_pixmap_handle.fds.emplace_back(std::move(fd));
+
+  DCHECK_EQ(strides.size(), offsets.size());
+  for (size_t plane = 0; plane < strides.size(); ++plane) {
+    handle.native_pixmap_handle.strides_and_offsets.emplace_back(
+        strides[plane], offsets[plane]);
+  }
 
   std::unique_ptr<gfx::GpuMemoryBuffer> gpu_memory_buffer =
       aura::Env::GetInstance()