Ensure that any IPC sent from a child process that couldn't be deserialized causes that p…

content/browser/browser_child_process_host_impl.cc

Index: content/browser/browser_child_process_host_impl.cc
===================================================================
--- content/browser/browser_child_process_host_impl.cc	(revision 270662)
+++ content/browser/browser_child_process_host_impl.cc	(working copy)
@@ -219,6 +219,12 @@
                     BrowserChildProcessInstanceCreated(data));
 }
 
+void BrowserChildProcessHostImpl::HistogramBadMessageTerminated(
+    int process_type) {
+  UMA_HISTOGRAM_ENUMERATION("ChildProcess.BadMessgeTerminated", process_type,
+                            PROCESS_TYPE_MAX);
+}
+
 base::TerminationStatus BrowserChildProcessHostImpl::GetTerminationStatus(
     bool known_dead, int* exit_code) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
@@ -252,6 +258,12 @@
   delegate_->OnChannelError();
 }
 
+void BrowserChildProcessHostImpl::OnBadMessageReceived(
+    const IPC::Message& message) {
+  HistogramBadMessageTerminated(data_.process_type);
+  base::KillProcess(GetHandle(), RESULT_CODE_KILLED_BAD_MESSAGE, false);
+}
+
 bool BrowserChildProcessHostImpl::CanShutdown() {
   return delegate_->CanShutdown();
 }