Fixed CHECKs for use of canceled ResourceContexts in ResourceDispatcherHostImpl.

content/browser/resource_context_impl.cc

Index: content/browser/resource_context_impl.cc
diff --git a/content/browser/resource_context_impl.cc b/content/browser/resource_context_impl.cc
index db1baeb342e99ca8688f2e10dbbeb93f5979de55..40d95890da55e875e0cabe9fb280400420b64bcb 100644
--- a/content/browser/resource_context_impl.cc
+++ b/content/browser/resource_context_impl.cc
@@ -180,9 +180,17 @@ AppCacheService* ResourceContext::GetAppCacheService(ResourceContext* context) {
       context, kAppCacheServicKeyName);
 }
 
-ResourceContext::~ResourceContext() {
+ResourceContext::ResourceContext() {
   if (ResourceDispatcherHostImpl::Get())
-    ResourceDispatcherHostImpl::Get()->CancelRequestsForContext(this);
+    ResourceDispatcherHostImpl::Get()->AddResourceContext(this);
+}
+
+ResourceContext::~ResourceContext() {
+  ResourceDispatcherHostImpl* rdhi = ResourceDispatcherHostImpl::Get();
+  if (rdhi) {
+    rdhi->CancelRequestsForContext(this);
+    rdhi->RemoveResourceContext(this);
+  }
 }
 
 BlobStorageController* GetBlobStorageControllerForResourceContext(