[ServiceWorkerCache] Return the real size of the cache in GetOriginUsage.

content/browser/service_worker/service_worker_cache_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/service_worker/service_worker_cache.h"
 
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/run_loop.h"
@@ skipping 282 matching lines @@
   scoped_ptr<ServiceWorkerResponse> callback_response_;
   scoped_ptr<storage::BlobDataHandle> callback_response_data_;
   std::vector<std::string> callback_strings_;
 };
 
 class ServiceWorkerCacheTestP : public ServiceWorkerCacheTest,
                                 public testing::WithParamInterface<bool> {
   bool MemoryOnly() override { return !GetParam(); }
 };
 
+class ServiceWorkerCacheMemoryOnlyTest
+    : public ServiceWorkerCacheTest,
+      public testing::WithParamInterface<bool> {
+  bool MemoryOnly() override { return true; }
+};
+
 TEST_P(ServiceWorkerCacheTestP, PutNoBody) {
   EXPECT_TRUE(Put(no_body_request_, no_body_response_));
   EXPECT_TRUE(callback_response_);
   EXPECT_STREQ(no_body_response_.url.spec().c_str(),
                callback_response_->url.spec().c_str());
   EXPECT_FALSE(callback_response_data_);
   EXPECT_STREQ("", callback_response_->blob_uuid.c_str());
   EXPECT_EQ(0u, callback_response_->blob_size);
 }
 
@@ skipping 245 matching lines @@
   EXPECT_EQ(3, quota_manager_proxy_->notify_storage_modified_count());
   sum_delta += quota_manager_proxy_->last_notified_delta();
 
   EXPECT_TRUE(Delete(no_body_request_));
   EXPECT_EQ(4, quota_manager_proxy_->notify_storage_modified_count());
   sum_delta += quota_manager_proxy_->last_notified_delta();
 
   EXPECT_EQ(0, sum_delta);
 }
 
+TEST_F(ServiceWorkerCacheMemoryOnlyTest, MemoryBackedSize) {
+  EXPECT_EQ(0, cache_->MemoryBackedSize());
+  EXPECT_TRUE(Put(no_body_request_, no_body_response_));
+  EXPECT_LT(0, cache_->MemoryBackedSize());
+  int64 no_body_size = cache_->MemoryBackedSize();
+
+  EXPECT_TRUE(Delete(no_body_request_));
+  EXPECT_EQ(0, cache_->MemoryBackedSize());
+
+  EXPECT_TRUE(Put(body_request_, body_response_));
+  EXPECT_LT(no_body_size, cache_->MemoryBackedSize());
+
+  EXPECT_TRUE(Delete(body_request_));
+  EXPECT_EQ(0, cache_->MemoryBackedSize());
+}
+
+TEST_F(ServiceWorkerCacheTest, MemoryBackedSizePersistent) {
+  EXPECT_EQ(0, cache_->MemoryBackedSize());
+  EXPECT_TRUE(Put(no_body_request_, no_body_response_));
+  EXPECT_EQ(0, cache_->MemoryBackedSize());
+}
+
 INSTANTIATE_TEST_CASE_P(ServiceWorkerCacheTest,
                         ServiceWorkerCacheTestP,
                         ::testing::Values(false, true));
 
 }  // namespace content