Revert of Always apply UniformMatrix4fvStreamTextureMatrixCHROMIUM matrix argument.

cc/output/gl_renderer.cc

Index: cc/output/gl_renderer.cc
diff --git a/cc/output/gl_renderer.cc b/cc/output/gl_renderer.cc
index d99672111dab3e7b4f74c0bc8b0625032c33e9c4..47f1b222c8b2937519ca0539f89a534ffd2bf160 100644
--- a/cc/output/gl_renderer.cc
+++ b/cc/output/gl_renderer.cc
@@ -2317,6 +2317,13 @@
   DCHECK_EQ(GL_TEXTURE0, GetActiveTextureUnit(gl_));
   gl_->BindTexture(GL_TEXTURE_EXTERNAL_OES, lock.texture_id());
 
+  // TODO(liberato): stream_texture_android should stop sending |gl_matrix| to
+  // the video frame provider with this change (and to us), but it should
+  // start reporting the current matrix via
+  // GLStreamTextureImage::GetTextureMatrix.  Until then, though, this will use
+  // the matrix that we provide to it, unless the GLStreamTextureImage
+  // overrides it.  This lets it also work with AVDACodecImage, which provides
+  // the correct custom matrix and supplies a default one to us.
   gl_->UniformMatrix4fvStreamTextureMatrixCHROMIUM(
       program->vertex_shader().tex_matrix_location(), false, gl_matrix);