Ensure display hardware is powered up during Chromoting sessions.

remoting/host/capturer_win.cc

Index: remoting/host/capturer_win.cc
diff --git a/remoting/host/capturer_win.cc b/remoting/host/capturer_win.cc
index 98a1a37493cba88ac4f6e8fedb4edc98869bba6b..74652a5a34b9390ab560de372c1c62f2141c0bd7 100644
--- a/remoting/host/capturer_win.cc
+++ b/remoting/host/capturer_win.cc
@@ -153,6 +153,10 @@ void CapturerGdi::InvalidateFullScreen() {
 
 void CapturerGdi::CaptureInvalidRegion(
     const CaptureCompletedCallback& callback) {
+  // Force the system to power-up display hardware, if it has been suspended.
+  SetThreadExecutionState(ES_DISPLAY_REQUIRED);
+
+  // Perform the capture.
   CalculateInvalidRegion();
   SkRegion invalid_region;
   helper_.SwapInvalidRegion(&invalid_region);