Domain Reliability: Add rudimentary WebUI page.

components/domain_reliability/context.cc

Index: components/domain_reliability/context.cc
diff --git a/components/domain_reliability/context.cc b/components/domain_reliability/context.cc
index 57c71a355cc48eb53411f308d48dea37fa9a57dd..fd9c6c861c8df47c65157d8b4404b634d08f20e6 100644
--- a/components/domain_reliability/context.cc
+++ b/components/domain_reliability/context.cc
@@ -38,7 +38,10 @@ class DomainReliabilityContext::ResourceState {
       : context(context),
         config(config),
         successful_requests(0),
-        failed_requests(0) {}
+        failed_requests(0),
+        uploading_beacons_size(0),
+        uploading_successful_requests(0),
+        uploading_failed_requests(0) {}
   ~ResourceState() {}
 
   // Serializes the resource state into a Value to be included in an upload.
@@ -136,6 +139,7 @@ DomainReliabilityContext::DomainReliabilityContext(
       dispatcher_(dispatcher),
       uploader_(uploader),
       beacon_count_(0),
+      uploading_beacon_count_(0),
       weak_factory_(this) {
   InitializeResourceStates();
 }
@@ -192,6 +196,17 @@ void DomainReliabilityContext::ClearBeacons() {
   uploading_beacon_count_ = 0;
 }
 
+scoped_ptr<base::Value> DomainReliabilityContext::GetWebUIData() const {
+  base::DictionaryValue* context_value = new base::DictionaryValue();
+
+  context_value->SetString("domain", config().domain);
+  context_value->SetInteger("beacon_count", beacon_count_);
+  context_value->SetInteger("uploading_beacon_count", uploading_beacon_count_);
+  context_value->Set("scheduler", scheduler_.GetWebUIData());
+
+  return scoped_ptr<base::Value>(context_value);
+}
+
 void DomainReliabilityContext::GetQueuedDataForTesting(
     size_t resource_index,
     std::vector<DomainReliabilityBeacon>* beacons_out,