Add format modifier IDs for EGL_EXT_image_dma_buf_import extension

ui/ozone/platform/drm/gpu/gbm_buffer.h

Index: ui/ozone/platform/drm/gpu/gbm_buffer.h
diff --git a/ui/ozone/platform/drm/gpu/gbm_buffer.h b/ui/ozone/platform/drm/gpu/gbm_buffer.h
index f2351fa62bf868d90f8b14235b131898eee4ae2f..91739f01e46586d33aa9d89b58f3ceb661fa12cc 100644
--- a/ui/ozone/platform/drm/gpu/gbm_buffer.h
+++ b/ui/ozone/platform/drm/gpu/gbm_buffer.h
@@ -33,8 +33,7 @@ class GbmBuffer : public GbmBufferBase {
       gfx::BufferFormat format,
       const gfx::Size& size,
       std::vector<base::ScopedFD>&& fds,
-      const std::vector<int>& strides,
-      const std::vector<int>& offsets);
+      const std::vector<gfx::GbmBufferPlane>&& planes);
   gfx::BufferFormat GetFormat() const { return format_; }
   gfx::BufferUsage GetUsage() const { return usage_; }
   bool AreFdsValid() const;
@@ -42,6 +41,7 @@ class GbmBuffer : public GbmBufferBase {
   int GetFd(size_t plane) const;
   int GetStride(size_t plane) const;
   int GetOffset(size_t plane) const;
+  uint64_t GetFormatModifier(size_t plane) const;
   gfx::Size GetSize() const override;
 
  private:
@@ -51,16 +51,15 @@ class GbmBuffer : public GbmBufferBase {
             gfx::BufferUsage usage,
             std::vector<base::ScopedFD>&& fds,
             const gfx::Size& size,
-            const std::vector<int>& strides,
-            const std::vector<int>& offsets);
+            const std::vector<gfx::GbmBufferPlane>&& planes);
   ~GbmBuffer() override;
 
   gfx::BufferFormat format_;
   gfx::BufferUsage usage_;
   std::vector<base::ScopedFD> fds_;
   gfx::Size size_;
-  std::vector<int> strides_;
-  std::vector<int> offsets_;
+
+  std::vector<gfx::GbmBufferPlane> planes_;
 
   DISALLOW_COPY_AND_ASSIGN(GbmBuffer);
 };
@@ -80,6 +79,7 @@ class GbmPixmap : public NativePixmap {
   int GetDmaBufFd(size_t plane) const override;
   int GetDmaBufPitch(size_t plane) const override;
   int GetDmaBufOffset(size_t plane) const override;
+  uint64_t GetDmaBufModifier(size_t plane) const override;
   gfx::BufferFormat GetBufferFormat() const override;
   gfx::Size GetBufferSize() const override;
   bool ScheduleOverlayPlane(gfx::AcceleratedWidget widget,