Remove memory_pressure component.

chromecast/browser/cast_memory_pressure_monitor.h

Index: chromecast/browser/cast_memory_pressure_monitor.h
diff --git a/chromecast/browser/cast_memory_pressure_monitor.h b/chromecast/browser/cast_memory_pressure_monitor.h
index 9d45cbf28d971061ff4f48b3ad046ad012b5b6fb..6271e5f426859e1596079314711255e90634f1ed 100644
--- a/chromecast/browser/cast_memory_pressure_monitor.h
+++ b/chromecast/browser/cast_memory_pressure_monitor.h
@@ -13,8 +13,6 @@ namespace chromecast {
 
 // Memory pressure monitor for Cast: polls for current memory
 // usage periodically and sends memory pressure notifications.
-// TODO(halliwell): switch to //components/memory_pressure when that's
-// ready.
 class CastMemoryPressureMonitor : public base::MemoryPressureMonitor {
  public:
   CastMemoryPressureMonitor();