[BlobAsync] Disk support for blob storage

content/browser/blob_storage/blob_async_builder_host_unittest.cc

 // Copyright 2015 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 "storage/browser/blob/blob_async_builder_host.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <string.h>
 
@@ skipping 11 matching lines @@
 namespace storage {
 namespace {
 const std::string kBlobUUID = "blobUUIDYAY";
 const std::string kContentType = "content_type";
 const std::string kContentDisposition = "content_disposition";
 const std::string kCompletedBlobUUID = "completedBlob";
 const std::string kCompletedBlobData = "completedBlobData";
 
 const size_t kTestBlobStorageIPCThresholdBytes = 5;
 const size_t kTestBlobStorageMaxSharedMemoryBytes = 20;
+
+const size_t kTestBlobStorageMaxBlobMemorySize = 400;
+const uint64_t kTestBlobStorageMaxDiskSpace = 4000;
+const size_t kTestBlobStorageInFlightMemory = 10;
+const uint64_t kTestBlobStorageMinFileSizeBytes = 10;
 const uint64_t kTestBlobStorageMaxFileSizeBytes = 100;
 
 void PopulateBytes(char* bytes, size_t length) {
   for (size_t i = 0; i < length; i++) {
     bytes[i] = static_cast<char>(i);
   }
 }
 
 void AddMemoryItem(size_t length, std::vector<DataElement>* out) {
   DataElement bytes;
@@ skipping 18 matching lines @@
 void AddBlobItem(std::vector<DataElement>* out) {
   DataElement blob;
   blob.SetToBlob(kCompletedBlobUUID);
   out->push_back(blob);
 }
 }  // namespace
 
 class BlobAsyncBuilderHostTest : public testing::Test {
  public:
   BlobAsyncBuilderHostTest()
-      : cancel_code_(IPCBlobCreationCancelCode::UNKNOWN),
+      : status_code_(BlobStatus::ERR_INVALID_CONSTRUCTION_ARGUMENTS),
         request_called_(false) {}
   ~BlobAsyncBuilderHostTest() override {}
 
   void SetUp() override {
-    cancel_code_ = IPCBlobCreationCancelCode::UNKNOWN;
+    status_code_ = BlobStatus::ERR_INVALID_CONSTRUCTION_ARGUMENTS;
     request_called_ = false;
     requests_.clear();
     memory_handles_.clear();
-    host_.SetMemoryConstantsForTesting(kTestBlobStorageIPCThresholdBytes,
-                                       kTestBlobStorageMaxSharedMemoryBytes,
-                                       kTestBlobStorageMaxFileSizeBytes);
+    context_.mutable_memory_controller()->SetMemoryConstantsForTesting(
+        kTestBlobStorageIPCThresholdBytes, kTestBlobStorageMaxSharedMemoryBytes,
+        kTestBlobStorageMaxBlobMemorySize, kTestBlobStorageMaxDiskSpace,
+        kTestBlobStorageInFlightMemory, kTestBlobStorageMinFileSizeBytes,
+        kTestBlobStorageMaxFileSizeBytes);
     BlobDataBuilder builder(kCompletedBlobUUID);
     builder.AppendData(kCompletedBlobData);
     completed_blob_handle_ = context_.AddFinishedBlob(builder);
-    completed_blob_uuid_set_ = {kCompletedBlobUUID};
+    EXPECT_EQ(BlobStatus::DONE, completed_blob_handle_->GetBlobStatus());
   }
 
+  void StatusCallback(BlobStatus status) { status_code_ = status; }
+
   void RequestMemoryCallback(
-      std::unique_ptr<std::vector<storage::BlobItemBytesRequest>> requests,
-      std::unique_ptr<std::vector<base::SharedMemoryHandle>>
-          shared_memory_handles,
-      std::unique_ptr<std::vector<base::File>> files) {
-    requests_ = std::move(*requests);
-    memory_handles_ = std::move(*shared_memory_handles);
+      std::vector<storage::BlobItemBytesRequest> requests,
+      std::vector<base::SharedMemoryHandle> shared_memory_handles,
+      std::vector<base::File> files) {
+    requests_ = std::move(requests);
+    memory_handles_ = std::move(shared_memory_handles);
     request_called_ = true;
   }
 
-  BlobTransportResult BuildBlobAsync(
-      const std::vector<DataElement>& descriptions,
-      const std::set<std::string>& referenced_blob_uuids,
-      size_t memory_available) {
+  BlobStatus BuildBlobAsync(const std::string& uuid,
+                            const std::vector<DataElement>& descriptions) {
     request_called_ = false;
-    BlobTransportResult register_result =
-        host_.RegisterBlobUUID(kBlobUUID, kContentType, kContentDisposition,
-                               referenced_blob_uuids, &context_);
-    if (register_result != BlobTransportResult::DONE) {
-      return register_result;
-    }
-    return host_.StartBuildingBlob(
-        kBlobUUID, descriptions, memory_available, &context_,
+    return host_.RegisterBlob(
+        uuid, kContentType, kContentDisposition, descriptions, &context_,
         base::Bind(&BlobAsyncBuilderHostTest::RequestMemoryCallback,
+                   base::Unretained(this)),
+        base::Bind(&BlobAsyncBuilderHostTest::StatusCallback,
                    base::Unretained(this)));
   }
 
   void DecrementBlobRefCount(const std::string& uuid) {
     context_.DecrementBlobRefCount(uuid);
   }
 
   bool IsBeingBuiltInContext(const std::string& uuid) {
-    return context_.IsBeingBuilt(uuid);
+    return context_.GetBlobStatus(uuid) == BlobStatus::PENDING;
   }
 
   content::TestBrowserThreadBundle browser_thread_bundle_;
   BlobStorageContext context_;
   BlobAsyncBuilderHost host_;
-  IPCBlobCreationCancelCode cancel_code_;
+  BlobStatus status_code_;
 
   bool request_called_;
   std::vector<storage::BlobItemBytesRequest> requests_;
   std::vector<base::SharedMemoryHandle> memory_handles_;
-  std::set<std::string> completed_blob_uuid_set_;
-
   std::unique_ptr<BlobDataHandle> completed_blob_handle_;
 };
 
 // The 'shortcut' method is when the data is included in the initial IPCs and
 // the browser uses that instead of requesting the memory.
 TEST_F(BlobAsyncBuilderHostTest, TestShortcut) {
   std::vector<DataElement> descriptions;
 
   AddShortcutMemoryItem(10, &descriptions);
   AddBlobItem(&descriptions);
-  AddShortcutMemoryItem(5000, &descriptions);
+  AddShortcutMemoryItem(300, &descriptions);
 
   BlobDataBuilder expected(kBlobUUID);
   expected.set_content_type(kContentType);
   expected.set_content_disposition(kContentDisposition);
   AddShortcutMemoryItem(10, &expected);
   expected.AppendData(kCompletedBlobData);
-  AddShortcutMemoryItem(5000, &expected);
+  AddShortcutMemoryItem(300, &expected);
 
-  EXPECT_EQ(BlobTransportResult::DONE,
-            BuildBlobAsync(descriptions, completed_blob_uuid_set_, 5010));
+  EXPECT_EQ(BlobStatus::DONE, BuildBlobAsync(kBlobUUID, descriptions));
 
   EXPECT_FALSE(request_called_);
   EXPECT_EQ(0u, host_.blob_building_count());
   std::unique_ptr<BlobDataHandle> handle =
       context_.GetBlobDataFromUUID(kBlobUUID);
   EXPECT_FALSE(handle->IsBeingBuilt());
-  EXPECT_FALSE(handle->IsBroken());
+  ASSERT_FALSE(handle->IsBroken());
   std::unique_ptr<BlobDataSnapshot> data = handle->CreateSnapshot();
   EXPECT_EQ(expected, *data);
   data.reset();
   handle.reset();
   base::RunLoop().RunUntilIdle();
 };
 
 TEST_F(BlobAsyncBuilderHostTest, TestShortcutNoRoom) {
   std::vector<DataElement> descriptions;
 
   AddShortcutMemoryItem(10, &descriptions);
   AddBlobItem(&descriptions);
   AddShortcutMemoryItem(5000, &descriptions);
 
-  EXPECT_EQ(BlobTransportResult::CANCEL_MEMORY_FULL,
-            BuildBlobAsync(descriptions, completed_blob_uuid_set_, 5000));
+  EXPECT_EQ(BlobStatus::ERR_OUT_OF_MEMORY,
+            BuildBlobAsync(kBlobUUID, descriptions));
 
   EXPECT_FALSE(request_called_);
   EXPECT_EQ(0u, host_.blob_building_count());
 };
 
 TEST_F(BlobAsyncBuilderHostTest, TestSingleSharedMemRequest) {
   std::vector<DataElement> descriptions;
   const size_t kSize = kTestBlobStorageIPCThresholdBytes + 1;
   AddMemoryItem(kSize, &descriptions);
 
-  EXPECT_EQ(BlobTransportResult::PENDING_RESPONSES,
-            BuildBlobAsync(descriptions, std::set<std::string>(),
-                           kTestBlobStorageIPCThresholdBytes + 1));
+  EXPECT_EQ(BlobStatus::PENDING, BuildBlobAsync(kBlobUUID, descriptions));
 
   EXPECT_TRUE(request_called_);
   EXPECT_EQ(1u, host_.blob_building_count());
   ASSERT_EQ(1u, requests_.size());
   request_called_ = false;
 
   EXPECT_EQ(
       BlobItemBytesRequest::CreateSharedMemoryRequest(0, 0, 0, kSize, 0, 0),
       requests_.at(0));
 };
 
 TEST_F(BlobAsyncBuilderHostTest, TestMultipleSharedMemRequests) {
   std::vector<DataElement> descriptions;
   const size_t kSize = kTestBlobStorageMaxSharedMemoryBytes + 1;
   const char kFirstBlockByte = 7;
   const char kSecondBlockByte = 19;
   AddMemoryItem(kSize, &descriptions);
 
   BlobDataBuilder expected(kBlobUUID);
   expected.set_content_type(kContentType);
   expected.set_content_disposition(kContentDisposition);
   char data[kSize];
   memset(data, kFirstBlockByte, kTestBlobStorageMaxSharedMemoryBytes);
   expected.AppendData(data, kTestBlobStorageMaxSharedMemoryBytes);
   expected.AppendData(&kSecondBlockByte, 1);
 
-  EXPECT_EQ(BlobTransportResult::PENDING_RESPONSES,
-            BuildBlobAsync(descriptions, std::set<std::string>(),
-                           kTestBlobStorageMaxSharedMemoryBytes + 1));
+  EXPECT_EQ(BlobStatus::PENDING, BuildBlobAsync(kBlobUUID, descriptions));
 
   EXPECT_TRUE(request_called_);
   EXPECT_EQ(1u, host_.blob_building_count());
   ASSERT_EQ(1u, requests_.size());
   request_called_ = false;
 
   // We need to grab a duplicate handle so we can have two blocks open at the
   // same time.
   base::SharedMemoryHandle handle =
       base::SharedMemory::DuplicateHandle(memory_handles_.at(0));
   EXPECT_TRUE(base::SharedMemory::IsHandleValid(handle));
   base::SharedMemory shared_memory(handle, false);
   EXPECT_TRUE(shared_memory.Map(kTestBlobStorageMaxSharedMemoryBytes));
 
   EXPECT_EQ(BlobItemBytesRequest::CreateSharedMemoryRequest(
                 0, 0, 0, kTestBlobStorageMaxSharedMemoryBytes, 0, 0),
             requests_.at(0));
 
   memset(shared_memory.memory(), kFirstBlockByte,
          kTestBlobStorageMaxSharedMemoryBytes);
 
   BlobItemBytesResponse response(0);
   std::vector<BlobItemBytesResponse> responses = {response};
-  EXPECT_EQ(BlobTransportResult::PENDING_RESPONSES,
+  EXPECT_EQ(BlobStatus::PENDING,
             host_.OnMemoryResponses(kBlobUUID, responses, &context_));
 
   EXPECT_TRUE(request_called_);
   EXPECT_EQ(1u, host_.blob_building_count());
   ASSERT_EQ(1u, requests_.size());
   request_called_ = false;
 
   EXPECT_EQ(BlobItemBytesRequest::CreateSharedMemoryRequest(
                 1, 0, kTestBlobStorageMaxSharedMemoryBytes, 1, 0, 0),
             requests_.at(0));
 
   memset(shared_memory.memory(), kSecondBlockByte, 1);
 
   response.request_number = 1;
   responses[0] = response;
-  EXPECT_EQ(BlobTransportResult::DONE,
+  EXPECT_EQ(BlobStatus::DONE,
             host_.OnMemoryResponses(kBlobUUID, responses, &context_));
   EXPECT_FALSE(request_called_);
   EXPECT_EQ(0u, host_.blob_building_count());
   std::unique_ptr<BlobDataHandle> blob_handle =
       context_.GetBlobDataFromUUID(kBlobUUID);
   EXPECT_FALSE(blob_handle->IsBeingBuilt());
   EXPECT_FALSE(blob_handle->IsBroken());
   std::unique_ptr<BlobDataSnapshot> blob_data = blob_handle->CreateSnapshot();
   EXPECT_EQ(expected, *blob_data);
 };
 
 TEST_F(BlobAsyncBuilderHostTest, TestBasicIPCAndStopBuilding) {
   std::vector<DataElement> descriptions;
 
   AddMemoryItem(2, &descriptions);
   AddBlobItem(&descriptions);
   AddMemoryItem(2, &descriptions);
 
   BlobDataBuilder expected(kBlobUUID);
   expected.set_content_type(kContentType);
   expected.set_content_disposition(kContentDisposition);
   AddShortcutMemoryItem(2, &expected);
   expected.AppendData(kCompletedBlobData);
   AddShortcutMemoryItem(2, &expected);
 
-  EXPECT_EQ(BlobTransportResult::PENDING_RESPONSES,
-            BuildBlobAsync(descriptions, completed_blob_uuid_set_, 5010));
-  host_.CancelBuildingBlob(kBlobUUID, IPCBlobCreationCancelCode::UNKNOWN,
-                           &context_);
+  EXPECT_EQ(BlobStatus::PENDING, BuildBlobAsync(kBlobUUID, descriptions));
+  host_.CancelBuildingBlob(kBlobUUID, BlobStatus::ERR_OUT_OF_MEMORY, &context_);
 
   // Check that we're broken, and then remove the blob.
   std::unique_ptr<BlobDataHandle> blob_handle =
       context_.GetBlobDataFromUUID(kBlobUUID);
   EXPECT_FALSE(blob_handle->IsBeingBuilt());
   EXPECT_TRUE(blob_handle->IsBroken());
   blob_handle.reset();
   DecrementBlobRefCount(kBlobUUID);
   base::RunLoop().RunUntilIdle();
   blob_handle = context_.GetBlobDataFromUUID(kBlobUUID);
   EXPECT_FALSE(blob_handle.get());
 
   // This should succeed because we've removed all references to the blob.
-  EXPECT_EQ(BlobTransportResult::PENDING_RESPONSES,
-            BuildBlobAsync(descriptions, completed_blob_uuid_set_, 5010));
+  EXPECT_EQ(BlobStatus::PENDING, BuildBlobAsync(kBlobUUID, descriptions));
 
   EXPECT_TRUE(request_called_);
   EXPECT_EQ(1u, host_.blob_building_count());
   request_called_ = false;
 
   BlobItemBytesResponse response1(0);
   PopulateBytes(response1.allocate_mutable_data(2), 2);
   BlobItemBytesResponse response2(1);
   PopulateBytes(response2.allocate_mutable_data(2), 2);
   std::vector<BlobItemBytesResponse> responses = {response1, response2};
 
-  EXPECT_EQ(BlobTransportResult::DONE,
+  EXPECT_EQ(BlobStatus::DONE,
             host_.OnMemoryResponses(kBlobUUID, responses, &context_));
   EXPECT_FALSE(request_called_);
   EXPECT_EQ(0u, host_.blob_building_count());
   blob_handle = context_.GetBlobDataFromUUID(kBlobUUID);
   EXPECT_FALSE(blob_handle->IsBeingBuilt());
   EXPECT_FALSE(blob_handle->IsBroken());
   std::unique_ptr<BlobDataSnapshot> blob_data = blob_handle->CreateSnapshot();
   EXPECT_EQ(expected, *blob_data);
 };
 
 TEST_F(BlobAsyncBuilderHostTest, TestBreakingAllBuilding) {
   const std::string& kBlob1 = "blob1";
   const std::string& kBlob2 = "blob2";
   const std::string& kBlob3 = "blob3";
 
-  // Register blobs.
-  EXPECT_EQ(BlobTransportResult::DONE,
-            host_.RegisterBlobUUID(kBlob1, kContentType, kContentDisposition,
-                                   std::set<std::string>(), &context_));
-  EXPECT_EQ(BlobTransportResult::DONE,
-            host_.RegisterBlobUUID(kBlob2, kContentType, kContentDisposition,
-                                   std::set<std::string>(), &context_));
-  EXPECT_EQ(BlobTransportResult::DONE,
-            host_.RegisterBlobUUID(kBlob3, kContentType, kContentDisposition,
-                                   std::set<std::string>(), &context_));
-
-  // Start building one of them.
   std::vector<DataElement> descriptions;
   AddMemoryItem(2, &descriptions);
-  EXPECT_EQ(BlobTransportResult::PENDING_RESPONSES,
-            host_.StartBuildingBlob(
-                kBlob1, descriptions, 2, &context_,
-                base::Bind(&BlobAsyncBuilderHostTest::RequestMemoryCallback,
-                           base::Unretained(this))));
+
+  // Register blobs.
+  EXPECT_EQ(BlobStatus::PENDING, BuildBlobAsync(kBlob1, descriptions));
+  EXPECT_EQ(BlobStatus::PENDING, BuildBlobAsync(kBlob2, descriptions));
+  EXPECT_EQ(BlobStatus::PENDING, BuildBlobAsync(kBlob3, descriptions));
+
   EXPECT_TRUE(request_called_);
 
   std::unique_ptr<BlobDataHandle> blob_handle1 =
       context_.GetBlobDataFromUUID(kBlob1);
   std::unique_ptr<BlobDataHandle> blob_handle2 =
       context_.GetBlobDataFromUUID(kBlob2);
   std::unique_ptr<BlobDataHandle> blob_handle3 =
       context_.GetBlobDataFromUUID(kBlob2);
   EXPECT_TRUE(blob_handle1->IsBeingBuilt() && blob_handle2->IsBeingBuilt() &&
               blob_handle3->IsBeingBuilt());
@@ skipping 11 matching lines @@
   blob_handle3.reset();
   base::RunLoop().RunUntilIdle();
 };
 
 TEST_F(BlobAsyncBuilderHostTest, TestBadIPCs) {
   std::vector<DataElement> descriptions;
 
   // Test reusing same blob uuid.
   AddMemoryItem(10, &descriptions);
   AddBlobItem(&descriptions);
-  AddMemoryItem(5000, &descriptions);
-  EXPECT_EQ(BlobTransportResult::PENDING_RESPONSES,
-            BuildBlobAsync(descriptions, completed_blob_uuid_set_, 5010));
-  EXPECT_EQ(BlobTransportResult::BAD_IPC,
-            BuildBlobAsync(descriptions, completed_blob_uuid_set_, 5010));
+  AddMemoryItem(300, &descriptions);
+  EXPECT_EQ(BlobStatus::PENDING, BuildBlobAsync(kBlobUUID, descriptions));
+  EXPECT_EQ(BlobStatus::ERR_INVALID_CONSTRUCTION_ARGUMENTS,
+            BuildBlobAsync(kBlobUUID, descriptions));
   EXPECT_FALSE(request_called_);
-  host_.CancelBuildingBlob(kBlobUUID, IPCBlobCreationCancelCode::UNKNOWN,
+  host_.CancelBuildingBlob(kBlobUUID, BlobStatus::ERR_REFERENCED_BLOB_BROKEN,
                            &context_);
   base::RunLoop().RunUntilIdle();
   DecrementBlobRefCount(kBlobUUID);
   EXPECT_FALSE(context_.GetBlobDataFromUUID(kBlobUUID).get());
 
   // Test we're an error if we get a bad uuid for responses.
   BlobItemBytesResponse response(0);
   std::vector<BlobItemBytesResponse> responses = {response};
-  EXPECT_EQ(BlobTransportResult::BAD_IPC,
+  EXPECT_EQ(BlobStatus::ERR_INVALID_CONSTRUCTION_ARGUMENTS,
             host_.OnMemoryResponses(kBlobUUID, responses, &context_));
 
   // Test empty responses.
   responses.clear();
-  EXPECT_EQ(BlobTransportResult::BAD_IPC,
+  EXPECT_EQ(BlobStatus::ERR_INVALID_CONSTRUCTION_ARGUMENTS,
             host_.OnMemoryResponses(kBlobUUID, responses, &context_));
 
   // Test response problems below here.
   descriptions.clear();
   AddMemoryItem(2, &descriptions);
   AddBlobItem(&descriptions);
   AddMemoryItem(2, &descriptions);
-  EXPECT_EQ(BlobTransportResult::PENDING_RESPONSES,
-            BuildBlobAsync(descriptions, completed_blob_uuid_set_, 5010));
+  EXPECT_EQ(BlobStatus::PENDING, BuildBlobAsync(kBlobUUID, descriptions));
 
   // Invalid request number.
   BlobItemBytesResponse response1(3);
   PopulateBytes(response1.allocate_mutable_data(2), 2);
   responses = {response1};
-  EXPECT_EQ(BlobTransportResult::BAD_IPC,
+  EXPECT_EQ(BlobStatus::ERR_INVALID_CONSTRUCTION_ARGUMENTS,
             host_.OnMemoryResponses(kBlobUUID, responses, &context_));
   EXPECT_TRUE(context_.GetBlobDataFromUUID(kBlobUUID)->IsBroken());
   DecrementBlobRefCount(kBlobUUID);
   base::RunLoop().RunUntilIdle();
 
   // Duplicate request number responses.
-  EXPECT_EQ(BlobTransportResult::PENDING_RESPONSES,
-            BuildBlobAsync(descriptions, completed_blob_uuid_set_, 5010));
+  EXPECT_EQ(BlobStatus::PENDING, BuildBlobAsync(kBlobUUID, descriptions));
   response1.request_number = 0;
   BlobItemBytesResponse response2(0);
   PopulateBytes(response2.allocate_mutable_data(2), 2);
   responses = {response1, response2};
-  EXPECT_EQ(BlobTransportResult::BAD_IPC,
+  EXPECT_EQ(BlobStatus::ERR_INVALID_CONSTRUCTION_ARGUMENTS,
             host_.OnMemoryResponses(kBlobUUID, responses, &context_));
   EXPECT_TRUE(context_.GetBlobDataFromUUID(kBlobUUID)->IsBroken());
   DecrementBlobRefCount(kBlobUUID);
   base::RunLoop().RunUntilIdle();
 };
 
 TEST_F(BlobAsyncBuilderHostTest, WaitOnReferencedBlob) {
   const std::string& kBlob1 = "blob1";
   const std::string& kBlob2 = "blob2";
   const std::string& kBlob3 = "blob3";
 
+  std::vector<DataElement> descriptions;
+  AddMemoryItem(2, &descriptions);
+
   // Register blobs.
-  EXPECT_EQ(BlobTransportResult::DONE,
-            host_.RegisterBlobUUID(kBlob1, kContentType, kContentDisposition,
-                                   std::set<std::string>(), &context_));
-  EXPECT_EQ(BlobTransportResult::DONE,
-            host_.RegisterBlobUUID(kBlob2, kContentType, kContentDisposition,
-                                   std::set<std::string>(), &context_));
-  EXPECT_EQ(BlobTransportResult::DONE,
-            host_.RegisterBlobUUID(kBlob3, kContentType, kContentDisposition,
-                                   {kBlob1, kBlob2}, &context_));
+  EXPECT_EQ(BlobStatus::PENDING, BuildBlobAsync(kBlob1, descriptions));
+  EXPECT_EQ(BlobStatus::PENDING, BuildBlobAsync(kBlob2, descriptions));
+  EXPECT_TRUE(request_called_);
+  request_called_ = false;
 
   // Finish the third one, with a reference to the first and second blob.
-  std::vector<DataElement> descriptions;
-  AddShortcutMemoryItem(2, &descriptions);
   DataElement element;
   element.SetToBlob(kBlob1);
   descriptions.push_back(element);
   element.SetToBlob(kBlob2);
   descriptions.push_back(element);
 
+  EXPECT_EQ(BlobStatus::PENDING, BuildBlobAsync(kBlob3, descriptions));
+  EXPECT_TRUE(request_called_);
+  request_called_ = false;
+
   // Finish the third, but we should still be 'building' it.
-  EXPECT_EQ(BlobTransportResult::DONE,
-            host_.StartBuildingBlob(
-                kBlob3, descriptions, 2, &context_,
-                base::Bind(&BlobAsyncBuilderHostTest::RequestMemoryCallback,
-                           base::Unretained(this))));
+  BlobItemBytesResponse response1(0);
+  PopulateBytes(response1.allocate_mutable_data(2), 2);
+  std::vector<BlobItemBytesResponse> responses = {response1};
+  EXPECT_EQ(BlobStatus::DONE,
+            host_.OnMemoryResponses(kBlob3, responses, &context_));
   EXPECT_FALSE(request_called_);
-  EXPECT_TRUE(host_.IsBeingBuilt(kBlob3));
+  EXPECT_FALSE(host_.IsBeingBuilt(kBlob3));
   EXPECT_TRUE(IsBeingBuiltInContext(kBlob3));
 
   // Finish the first.
   descriptions.clear();
   AddShortcutMemoryItem(2, &descriptions);
-  EXPECT_EQ(BlobTransportResult::DONE,
-            host_.StartBuildingBlob(
-                kBlob1, descriptions, 2, &context_,
-                base::Bind(&BlobAsyncBuilderHostTest::RequestMemoryCallback,
-                           base::Unretained(this))));
+  EXPECT_EQ(BlobStatus::DONE,
+            host_.OnMemoryResponses(kBlob1, responses, &context_));
   EXPECT_FALSE(request_called_);
   EXPECT_FALSE(host_.IsBeingBuilt(kBlob1));
   EXPECT_FALSE(IsBeingBuiltInContext(kBlob1));
   EXPECT_TRUE(context_.GetBlobDataFromUUID(kBlob1));
 
   // Run the message loop so we propogate the construction complete callbacks.
   base::RunLoop().RunUntilIdle();
   // Verify we're not done.
-  EXPECT_TRUE(host_.IsBeingBuilt(kBlob3));
   EXPECT_TRUE(IsBeingBuiltInContext(kBlob3));
 
   // Finish the second.
-  EXPECT_EQ(BlobTransportResult::DONE,
-            host_.StartBuildingBlob(
-                kBlob2, descriptions, 2, &context_,
-                base::Bind(&BlobAsyncBuilderHostTest::RequestMemoryCallback,
-                           base::Unretained(this))));
+  EXPECT_EQ(BlobStatus::DONE,
+            host_.OnMemoryResponses(kBlob2, responses, &context_));
   EXPECT_FALSE(request_called_);
   EXPECT_FALSE(host_.IsBeingBuilt(kBlob2));
   EXPECT_FALSE(IsBeingBuiltInContext(kBlob2));
   EXPECT_TRUE(context_.GetBlobDataFromUUID(kBlob2));
 
   // Run the message loop so we propogate the construction complete callbacks.
   base::RunLoop().RunUntilIdle();
   // Finally, we should be finished with third blob.
   EXPECT_FALSE(host_.IsBeingBuilt(kBlob3));
   EXPECT_FALSE(IsBeingBuiltInContext(kBlob3));
   EXPECT_TRUE(context_.GetBlobDataFromUUID(kBlob3));
 };
 
-TEST_F(BlobAsyncBuilderHostTest, IncorrectBlobDependencies) {
-  const std::string& kGoodBlob = "goodBlob";
-  const std::string& kBlob1 = "blob1";
-  const std::string& kBlob2 = "blob2";
-  const std::string& kBlob3 = "blob3";
-
-  // Register blobs. Blob 1 has a reference to itself, Blob 2 has a reference
-  // but doesn't use it, and blob 3 doesn't list it's reference.
-  EXPECT_EQ(BlobTransportResult::DONE,
-            host_.RegisterBlobUUID(kGoodBlob, kContentType, kContentDisposition,
-                                   std::set<std::string>(), &context_));
-  EXPECT_EQ(BlobTransportResult::BAD_IPC,
-            host_.RegisterBlobUUID(kBlob1, kContentType, kContentDisposition,
-                                   {kBlob1}, &context_));
-  EXPECT_EQ(BlobTransportResult::DONE,
-            host_.RegisterBlobUUID(kBlob2, kContentType, kContentDisposition,
-                                   {kGoodBlob}, &context_));
-  EXPECT_EQ(BlobTransportResult::DONE,
-            host_.RegisterBlobUUID(kBlob3, kContentType, kContentDisposition,
-                                   std::set<std::string>(), &context_));
-
-  // The first blob shouldn't be building anymore.
-  EXPECT_FALSE(host_.IsBeingBuilt(kBlob1));
-
-  // Try to finish the second one, without a reference to the first.
-  std::vector<DataElement> descriptions;
-  AddShortcutMemoryItem(2, &descriptions);
-  EXPECT_EQ(BlobTransportResult::BAD_IPC,
-            host_.StartBuildingBlob(
-                kBlob2, descriptions, 2, &context_,
-                base::Bind(&BlobAsyncBuilderHostTest::RequestMemoryCallback,
-                           base::Unretained(this))));
-  EXPECT_FALSE(host_.IsBeingBuilt(kBlob2));
-
-  // Try to finish the third one with the reference we didn't declare earlier.
-  descriptions.clear();
-  AddShortcutMemoryItem(2, &descriptions);
-  DataElement element;
-  element.SetToBlob(kGoodBlob);
-  descriptions.push_back(element);
-  EXPECT_EQ(BlobTransportResult::BAD_IPC,
-            host_.StartBuildingBlob(
-                kBlob3, descriptions, 2, &context_,
-                base::Bind(&BlobAsyncBuilderHostTest::RequestMemoryCallback,
-                           base::Unretained(this))));
-  EXPECT_FALSE(host_.IsBeingBuilt(kBlob3));
-};
-
-TEST_F(BlobAsyncBuilderHostTest, BlobBreaksWhenReferenceBreaks) {
-  const std::string& kBlob1 = "blob1";
-  const std::string& kBlob2 = "blob2";
-
-  // Register blobs.
-  EXPECT_EQ(BlobTransportResult::DONE,
-            host_.RegisterBlobUUID(kBlob1, kContentType, kContentDisposition,
-                                   std::set<std::string>(), &context_));
-  EXPECT_EQ(BlobTransportResult::DONE,
-            host_.RegisterBlobUUID(kBlob2, kContentType, kContentDisposition,
-                                   {kBlob1}, &context_));
-
-  // Finish the second one, with a reference to the first.
-  std::vector<DataElement> descriptions;
-  AddShortcutMemoryItem(2, &descriptions);
-  DataElement element;
-  element.SetToBlob(kBlob1);
-  descriptions.push_back(element);
-  EXPECT_EQ(BlobTransportResult::DONE,
-            host_.StartBuildingBlob(
-                kBlob2, descriptions, 2, &context_,
-                base::Bind(&BlobAsyncBuilderHostTest::RequestMemoryCallback,
-                           base::Unretained(this))));
-  EXPECT_FALSE(request_called_);
-  EXPECT_TRUE(host_.IsBeingBuilt(kBlob2));
-  EXPECT_TRUE(IsBeingBuiltInContext(kBlob2));
-
-  // Break the first.
-  descriptions.clear();
-  host_.CancelBuildingBlob(kBlob1, IPCBlobCreationCancelCode::UNKNOWN,
-                           &context_);
-  EXPECT_FALSE(host_.IsBeingBuilt(kBlob1));
-  EXPECT_FALSE(IsBeingBuiltInContext(kBlob1));
-  EXPECT_TRUE(context_.GetBlobDataFromUUID(kBlob1)->IsBroken());
-
-  // Run the message loop so we propogate the construction complete callbacks.
-  base::RunLoop().RunUntilIdle();
-  // We should be finished with third blob, and it should be broken.
-  EXPECT_FALSE(host_.IsBeingBuilt(kBlob2));
-  EXPECT_FALSE(IsBeingBuiltInContext(kBlob2));
-  EXPECT_TRUE(context_.GetBlobDataFromUUID(kBlob2)->IsBroken());
-};
-
-TEST_F(BlobAsyncBuilderHostTest, BlobBreaksWhenReferenceBroken) {
-  const std::string& kBlob1 = "blob1";
-  const std::string& kBlob2 = "blob2";
-
-  // Register blobs.
-  EXPECT_EQ(BlobTransportResult::DONE,
-            host_.RegisterBlobUUID(kBlob1, kContentType, kContentDisposition,
-                                   std::set<std::string>(), &context_));
-  host_.CancelBuildingBlob(kBlob1, IPCBlobCreationCancelCode::UNKNOWN,
-                           &context_);
-  EXPECT_EQ(BlobTransportResult::CANCEL_REFERENCED_BLOB_BROKEN,
-            host_.RegisterBlobUUID(kBlob2, kContentType, kContentDisposition,
-                                   {kBlob1}, &context_));
-  EXPECT_FALSE(host_.IsBeingBuilt(kBlob2));
-  EXPECT_FALSE(IsBeingBuiltInContext(kBlob2));
-  EXPECT_TRUE(context_.GetBlobDataFromUUID(kBlob2)->IsBroken());
-};
-
 }  // namespace storage