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 2e1571a55ccefd4d01486dee8e91b3b11fb338c7..a6a3eb3846124d980bb05870ea0c6acd86f90e7a 100644
--- a/cc/output/gl_renderer.cc
+++ b/cc/output/gl_renderer.cc
@@ -2408,13 +2408,6 @@ void GLRenderer::DrawStreamVideoQuad(const DrawingFrame* frame,
   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);