cc: make partially-resident textures use 1 - y, not h - y.

cc/output/direct_renderer.cc

Index: cc/output/direct_renderer.cc
diff --git a/cc/output/direct_renderer.cc b/cc/output/direct_renderer.cc
index ede93ab7fcbcd0699c5ba64b841fde026c90919d..55a477016895b316b6b487e9fea04a14f06adf72 100644
--- a/cc/output/direct_renderer.cc
+++ b/cc/output/direct_renderer.cc
@@ -550,7 +550,7 @@ bool DirectRenderer::UseRenderPass(DrawingFrame* frame,
   if (BindFramebufferToTexture(frame, texture)) {
     InitializeViewport(frame, render_pass->output_rect,
                        gfx::Rect(render_pass->output_rect.size()),
-                       render_pass->output_rect.size());
+                       texture->size());
     return true;
   }