cc: Clean up max frames/swaps pending usage.

cc/test/fake_output_surface.h

Index: cc/test/fake_output_surface.h
diff --git a/cc/test/fake_output_surface.h b/cc/test/fake_output_surface.h
index 34274d85d073e329b0b9f6eb339a233d1ff5be4f..14ec0f20f46fa59c031e534bbdf17e78cd184ac0 100644
--- a/cc/test/fake_output_surface.h
+++ b/cc/test/fake_output_surface.h
@@ -94,6 +94,10 @@ class FakeOutputSurface : public OutputSurface {
     return surface.Pass();
   }
 
+  void set_max_frames_pending(int max) {
+    capabilities_.max_frames_pending = max;
+  }
+
   CompositorFrame& last_sent_frame() { return last_sent_frame_; }
   size_t num_sent_frames() { return num_sent_frames_; }