Fail all started requests if the utility process crashes or fails to start.

chrome/browser/image_decoder.h

Index: chrome/browser/image_decoder.h
diff --git a/chrome/browser/image_decoder.h b/chrome/browser/image_decoder.h
index d3bd4e7cf638ab8285a448139f09ab37ff9eda21..def5897d02636a6de6652786943901e53c5ed316 100644
--- a/chrome/browser/image_decoder.h
+++ b/chrome/browser/image_decoder.h
@@ -117,7 +117,12 @@ class ImageDecoder : public content::UtilityProcessHostClient {
   // |kBatchModeTimeoutSeconds|.
   void StopBatchMode();
 
+  // Fails all outstanding requests.
+  void FailAllRequests();
+
   // Overidden from UtilityProcessHostClient.
+  void OnProcessCrashed(int exit_code) override;
+  void OnProcessLaunchFailed() override;
   bool OnMessageReceived(const IPC::Message& message) override;
 
   // IPC message handlers.