Mozart: Specify texture origin explicitly.

mojo/ui/gl_renderer.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MOJO_UI_GL_RENDERER_H_
 #define MOJO_UI_GL_RENDERER_H_
 
 #include <deque>
 #include <memory>
 
@@ skipping 29 matching lines @@
 
   // Obtains a texture of the specified size.
   // Returns a nullptr if the GLContext was destroyed.
   std::unique_ptr<mojo::GLTexture> GetTexture(const mojo::Size& requested_size);
 
   // Takes ownership of the specified texture, issues GL commands to
   // produce a mailbox texture, and returns its resource pointer.
   // The caller should add the resource to its scene.
   // Returns a nullptr if the GLContext was destroyed.
   mojo::gfx::composition::ResourcePtr BindTextureResource(
-      std::unique_ptr<GLTexture> texture);
+      std::unique_ptr<GLTexture> texture,
+      mojo::gfx::composition::MailboxTextureResource::Origin origin =
+          mojo::gfx::composition::MailboxTextureResource::Origin::BOTTOM_LEFT);
 
   // Allocates a GL texture, binds it to a framebuffer, invokes the
   // provided function, then returns the resulting resource.
   // If |with_depth| is true, provides a depth buffer attachment.
   mojo::gfx::composition::ResourcePtr DrawGL(const mojo::Size& size,
                                              bool with_depth,
                                              const DrawGLCallback& callback);
 
  private:
   using GLRecycledTextureInfo =
@@ skipping 29 matching lines @@
 
   base::WeakPtrFactory<mojo::ui::GLRenderer> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GLRenderer);
 };
 
 }  // namespace ui
 }  // namespace mojo
 
 #endif  // MOJO_UI_GL_RENDERER_H_