1 files changed, 10 insertions, 1 deletions
diff --git a/gfx/layers/ipc/CompositorManagerChild.cpp b/gfx/layers/ipc/CompositorManagerChild.cpp
index 0e553745d3..8d89339373 100644
--- a/gfx/layers/ipc/CompositorManagerChild.cpp
+++ b/gfx/layers/ipc/CompositorManagerChild.cpp
@@ -10,6 +10,7 @@
 #include "mozilla/layers/CompositorBridgeChild.h"
 #include "mozilla/layers/CompositorManagerParent.h"
 #include "mozilla/layers/CompositorThread.h"
+#include "mozilla/gfx/CanvasShutdownManager.h"
 #include "mozilla/gfx/gfxVars.h"
 #include "mozilla/gfx/GPUProcessManager.h"
 #include "mozilla/dom/ContentChild.h"  // for ContentChild
@@ -67,7 +68,15 @@ bool CompositorManagerChild::Init(Endpoint<PCompositorManagerChild>&& aEndpoint,
   sInstance = new CompositorManagerChild(std::move(aEndpoint), aProcessToken,
                                          aNamespace);
   sOtherPid = sInstance->OtherPid();
-  return sInstance->CanSend();
+  if (!sInstance->CanSend()) {
+    return false;
+  }
+
+  // If there are any canvases waiting on the recreation of the GPUProcess or
+  // CompositorManagerChild, then we need to notify them so that they can
+  // restore their contexts.
+  gfx::CanvasShutdownManager::OnCompositorManagerRestored();
+  return true;
 }
 
 /* static */