Move code in ui/gl/* from gfx:: to gl::

media/gpu/vaapi_drm_picture.cc

Index: media/gpu/vaapi_drm_picture.cc
diff --git a/media/gpu/vaapi_drm_picture.cc b/media/gpu/vaapi_drm_picture.cc
index dc57dc9ab98b49267717e9f5726c7cb97d987507..4d547df6ad930ae2e3c1d7130d2d4002e2ea2195 100644
--- a/media/gpu/vaapi_drm_picture.cc
+++ b/media/gpu/vaapi_drm_picture.cc
@@ -59,10 +59,10 @@ bool VaapiDrmPicture::Initialize() {
     if (!make_context_current_cb_.Run())
       return false;
 
-    gfx::ScopedTextureBinder texture_binder(GL_TEXTURE_EXTERNAL_OES,
-                                            texture_id_);
-    scoped_refptr<gfx::GLImageOzoneNativePixmap> image(
-        new gfx::GLImageOzoneNativePixmap(size_, GL_BGRA_EXT));
+    gl::ScopedTextureBinder texture_binder(GL_TEXTURE_EXTERNAL_OES,
+                                           texture_id_);
+    scoped_refptr<gl::GLImageOzoneNativePixmap> image(
+        new gl::GLImageOzoneNativePixmap(size_, GL_BGRA_EXT));
     if (!image->Initialize(pixmap_.get(), pixmap_->GetBufferFormat())) {
       LOG(ERROR) << "Failed to create GLImage";
       return false;