Add a counter to calculate the total size of site data.

chrome/browser/browsing_data/mock_browsing_data_appcache_helper.cc

Index: chrome/browser/browsing_data/mock_browsing_data_appcache_helper.cc
diff --git a/chrome/browser/browsing_data/mock_browsing_data_appcache_helper.cc b/chrome/browser/browsing_data/mock_browsing_data_appcache_helper.cc
index 0dcd962ee19433cb1aaac1e0404065c6e37d8ceb..498be421c42533b3dbfed92bb1c091309dd6f34d 100644
--- a/chrome/browser/browsing_data/mock_browsing_data_appcache_helper.cc
+++ b/chrome/browser/browsing_data/mock_browsing_data_appcache_helper.cc
@@ -9,7 +9,8 @@
 
 MockBrowsingDataAppCacheHelper::MockBrowsingDataAppCacheHelper(
     content::BrowserContext* browser_context)
-    : BrowsingDataAppCacheHelper(browser_context) {
+    : BrowsingDataAppCacheHelper(browser_context),
+      response_(new content::AppCacheInfoCollection) {
 }
 
 MockBrowsingDataAppCacheHelper::~MockBrowsingDataAppCacheHelper() {
@@ -25,3 +26,25 @@ void MockBrowsingDataAppCacheHelper::StartFetching(
 void MockBrowsingDataAppCacheHelper::DeleteAppCacheGroup(
     const GURL& manifest_url) {
 }
+
+void MockBrowsingDataAppCacheHelper::AddAppCacheSamples() {
+  GURL kOrigin("http://hello/");
+  content::AppCacheInfo mock_manifest_1;
+  content::AppCacheInfo mock_manifest_2;
+  content::AppCacheInfo mock_manifest_3;
+  mock_manifest_1.manifest_url = kOrigin.Resolve("manifest1");
+  mock_manifest_1.size = 1;
+  mock_manifest_2.manifest_url = kOrigin.Resolve("manifest2");
+  mock_manifest_2.size = 2;
+  mock_manifest_3.manifest_url = kOrigin.Resolve("manifest3");
+  mock_manifest_3.size = 3;
+  content::AppCacheInfoVector info_vector;
+  info_vector.push_back(mock_manifest_1);
+  info_vector.push_back(mock_manifest_2);
+  info_vector.push_back(mock_manifest_3);
+  response_->infos_by_origin[kOrigin] = info_vector;
+}
+
+void MockBrowsingDataAppCacheHelper::Notify() {
+  completion_callback_.Run(response_);
+}