Add UMA histograms and logging for bad IPC message handling

content/public/browser/render_process_host.h

Index: content/public/browser/render_process_host.h
diff --git a/content/public/browser/render_process_host.h b/content/public/browser/render_process_host.h
index bb774988a2b83a2e8d0ccc6fd7ecfcdf8624c8d2..34942a7a34ab537f9233b79e28a69d51da4328f0 100644
--- a/content/public/browser/render_process_host.h
+++ b/content/public/browser/render_process_host.h
@@ -40,6 +40,7 @@ class RenderProcessHostObserver;
 class RenderWidgetHost;
 class ServiceRegistry;
 class StoragePartition;
+enum class BadMessage;
 struct GlobalRequestID;
 
 // Interface that represents the browser side of the browser <-> renderer
@@ -88,8 +89,9 @@ class CONTENT_EXPORT RenderProcessHost : public IPC::Sender,
   virtual void AddObserver(RenderProcessHostObserver* observer) = 0;
   virtual void RemoveObserver(RenderProcessHostObserver* observer) = 0;
 
-  // Called when a received message cannot be decoded.
-  virtual void ReceivedBadMessage() = 0;
+  // Called when a received message cannot be decoded. The |reason| is logged to
+  // the console.
+  virtual void ReceivedBadMessage(BadMessage reason) = 0;
 
   // Track the count of visible widgets. Called by listeners to register and
   // unregister visibility.