Add DCHECK for shared_timer_suspended_ which shouldn't be negative

content/browser/android/content_view_statics.cc

Index: content/browser/android/content_view_statics.cc
diff --git a/content/browser/android/content_view_statics.cc b/content/browser/android/content_view_statics.cc
index e176564c4a0f5a430aad40adaddc2d7aef806c05..75176db3ed52903e7b55cd46374832590ddb2177 100644
--- a/content/browser/android/content_view_statics.cc
+++ b/content/browser/android/content_view_statics.cc
@@ -43,8 +43,10 @@ void SuspendWebKitSharedTimers(std::vector<int>* suspended_processes) {
           content::RenderProcessHost::AllHostsIterator());
        !i.IsAtEnd(); i.Advance()) {
     content::RenderProcessHost* host = i.GetCurrentValue();
-    suspended_processes->push_back(host->GetID());
-    host->Send(new ViewMsg_SetWebKitSharedTimersSuspended(true));
+    if (host && host->HasConnection()) {
+      suspended_processes->push_back(host->GetID());
+      host->Send(new ViewMsg_SetWebKitSharedTimersSuspended(true));
+    }
   }
 }
 
@@ -53,7 +55,7 @@ void ResumeWebkitSharedTimers(const std::vector<int>& suspended_processes) {
   for (std::vector<int>::const_iterator it = suspended_processes.begin();
        it != suspended_processes.end(); ++it) {
     content::RenderProcessHost* host = content::RenderProcessHost::FromID(*it);
-    if (host)  // The process might have been killed since it was suspended.
+    if (host && host->HasConnection())  // The process might have been killed since it was suspended.
       host->Send(new ViewMsg_SetWebKitSharedTimersSuspended(false));
   }
 }