services/ui: Use the correct offset and stride in MojoGpuMemoryBuffer.

services/ui/public/cpp/mojo_gpu_memory_buffer.h

Index: services/ui/public/cpp/mojo_gpu_memory_buffer.h
diff --git a/services/ui/public/cpp/mojo_gpu_memory_buffer.h b/services/ui/public/cpp/mojo_gpu_memory_buffer.h
index 07e94204272bab1289d21bbce4e93eea90cb3cf2..fe9bc6030eee06ae23ebccc359b4c307834330cd 100644
--- a/services/ui/public/cpp/mojo_gpu_memory_buffer.h
+++ b/services/ui/public/cpp/mojo_gpu_memory_buffer.h
@@ -18,9 +18,6 @@ namespace ui {
 
 class MojoGpuMemoryBufferImpl : public ui::GpuMemoryBufferImpl {
  public:
-  MojoGpuMemoryBufferImpl(const gfx::Size& size,
-                          gfx::BufferFormat format,
-                          std::unique_ptr<base::SharedMemory> shared_memory);
   ~MojoGpuMemoryBufferImpl() override;
 
   static std::unique_ptr<gfx::GpuMemoryBuffer> Create(const gfx::Size& size,
@@ -46,7 +43,15 @@ class MojoGpuMemoryBufferImpl : public ui::GpuMemoryBufferImpl {
   gfx::GpuMemoryBufferType GetBufferType() const override;
 
  private:
+  MojoGpuMemoryBufferImpl(const gfx::Size& size,
+                          gfx::BufferFormat format,
+                          std::unique_ptr<base::SharedMemory> shared_memory,
+                          uint32_t offset,
+                          int32_t stride);
+
   std::unique_ptr<base::SharedMemory> shared_memory_;
+  const uint32_t offset_;
+  const int32_t stride_;
 
   DISALLOW_COPY_AND_ASSIGN(MojoGpuMemoryBufferImpl);
 };