Blob: Change the type of |expected_modification_time| arguments of BlobData

from double to base::Optional<base::Time>.

This CL also changes a double argument of File::CaptureSnapshot() to
base::Optional<base::Time>.

This CL has no behavior changes.

Bug: 988343
Change-Id: Ida6d0d415cc8f72d2c965bfd242b584080570791
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1933668
Commit-Queue: Kent Tamura <tkent@chromium.org>
Reviewed-by: Joshua Bell <jsbell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#718857}

third_party/blink/public/platform/web_blob_info.h

@@ -24,6 +24,7 @@ class WebBlobInfo {
                            const WebString& type,
                            uint64_t size,
                            mojo::ScopedMessagePipeHandle);
+  // |last_modified| - Seconds from Unix epoch.
   BLINK_EXPORT WebBlobInfo(const WebString& uuid,
                            const WebString& file_path,
                            const WebString& file_name,

third_party/blink/public/platform/web_http_body.h

@@ -94,6 +94,7 @@ class WebHTTPBody {
   BLINK_PLATFORM_EXPORT void AppendData(const WebData&);
   BLINK_PLATFORM_EXPORT void AppendFile(const WebString&);
   // Passing -1 to |file_length| means to the end of the file.
+  // |modification_time| - Seconds from Unix epoch.
   BLINK_PLATFORM_EXPORT void AppendFileRange(const WebString&,
                                              int64_t file_start,
                                              int64_t file_length,

third_party/blink/renderer/bindings/core/v8/serialization/v8_script_value_serializer.cc

@@ -625,10 +625,13 @@ bool V8ScriptValueSerializer::WriteFile(File* file,
     size_t index = blob_info_array_->size();
     DCHECK_LE(index, std::numeric_limits<uint32_t>::max());
     uint64_t size;
-    double last_modified_ms = InvalidFileTime();
-    file->CaptureSnapshot(size, last_modified_ms);
-    // FIXME: transition WebBlobInfo.lastModified to be milliseconds-based also.
-    double last_modified = last_modified_ms / kMsPerSecond;
+    base::Optional<base::Time> last_modified_time;
+    file->CaptureSnapshot(size, last_modified_time);
+    // TODO(crbug.com/988343): transition WebBlobInfo.lastModified to be
+    // base::Time also.
+    double last_modified = last_modified_time
+                               ? last_modified_time->ToDoubleT()
+                               : std::numeric_limits<double>::quiet_NaN();
     blob_info_array_->emplace_back(file->GetBlobDataHandle(), file->GetPath(),
                                    file->name(), file->type(), last_modified,
                                    size);
@@ -644,11 +647,12 @@ bool V8ScriptValueSerializer::WriteFile(File* file,
     if (file->HasValidSnapshotMetadata()) {
       WriteUint32(1);
       uint64_t size;
-      double last_modified_ms;
-      file->CaptureSnapshot(size, last_modified_ms);
+      base::Optional<base::Time> last_modified;
+      file->CaptureSnapshot(size, last_modified);
       DCHECK_NE(size, std::numeric_limits<uint64_t>::max());
       WriteUint64(size);
-      WriteDouble(last_modified_ms);
+      WriteDouble(last_modified ? last_modified->ToJsTimeIgnoringNull()
+                                : std::numeric_limits<double>::quiet_NaN());
     } else {
       WriteUint32(0);
     }

third_party/blink/renderer/core/exported/web_blob.cc

@@ -48,7 +48,7 @@ WebBlob WebBlob::CreateFromUUID(const WebString& uuid,
 
 WebBlob WebBlob::CreateFromFile(const WebString& path, uint64_t size) {
   auto blob_data = std::make_unique<BlobData>();
-  blob_data->AppendFile(path, 0, size, InvalidFileTime());
+  blob_data->AppendFile(path, 0, size, base::nullopt);
   return Blob::Create(BlobDataHandle::Create(std::move(blob_data), size));
 }
 

third_party/blink/renderer/core/fetch/form_data_bytes_consumer.cc

@@ -415,9 +415,9 @@ class ComplexFormDataBytesConsumer final : public BytesConsumer {
               return;
             }
           }
-          blob_data->AppendFile(element.filename_, element.file_start_,
-                                file_length,
-                                element.expected_file_modification_time_);
+          blob_data->AppendFile(
+              element.filename_, element.file_start_, file_length,
+              DoubleTToOptionalTime(element.expected_file_modification_time_));
           break;
         }
         case FormDataElement::kEncodedBlob:

third_party/blink/renderer/core/fileapi/file.cc

@@ -95,13 +95,11 @@ static std::unique_ptr<BlobData> CreateBlobDataForFileWithMetadata(
   std::unique_ptr<BlobData> blob_data;
   if (metadata.length == BlobData::kToEndOfFile) {
     blob_data = BlobData::CreateForFileWithUnknownSize(
-        metadata.platform_path,
-        ToJsTimeOrNaN(metadata.modification_time) / kMsPerSecond);
+        metadata.platform_path, metadata.modification_time);
   } else {
     blob_data = std::make_unique<BlobData>();
-    blob_data->AppendFile(
-        metadata.platform_path, 0, metadata.length,
-        ToJsTimeOrNaN(metadata.modification_time) / kMsPerSecond);
+    blob_data->AppendFile(metadata.platform_path, 0, metadata.length,
+                          metadata.modification_time);
   }
   blob_data->SetContentType(GetContentTypeFromFileName(
       file_system_name, File::kWellKnownContentTypes));
@@ -114,13 +112,11 @@ static std::unique_ptr<BlobData> CreateBlobDataForFileSystemURL(
   std::unique_ptr<BlobData> blob_data;
   if (metadata.length == BlobData::kToEndOfFile) {
     blob_data = BlobData::CreateForFileSystemURLWithUnknownSize(
-        file_system_url,
-        ToJsTimeOrNaN(metadata.modification_time) / kMsPerSecond);
+        file_system_url, metadata.modification_time);
   } else {
     blob_data = std::make_unique<BlobData>();
-    blob_data->AppendFileSystemURL(
-        file_system_url, 0, metadata.length,
-        ToJsTimeOrNaN(metadata.modification_time) / kMsPerSecond);
+    blob_data->AppendFileSystemURL(file_system_url, 0, metadata.length,
+                                   metadata.modification_time);
   }
   blob_data->SetContentType(GetContentTypeFromFileName(
       file_system_url.GetPath(), File::kWellKnownContentTypes));
@@ -364,24 +360,25 @@ Blob* File::slice(int64_t start,
   // FIXME: This involves synchronous file operation. We need to figure out how
   // to make it asynchronous.
   uint64_t size;
-  double modification_time_ms;
-  CaptureSnapshot(size, modification_time_ms);
+  base::Optional<base::Time> modification_time;
+  CaptureSnapshot(size, modification_time);
   ClampSliceOffsets(size, start, end);
 
   uint64_t length = end - start;
   auto blob_data = std::make_unique<BlobData>();
   blob_data->SetContentType(NormalizeType(content_type));
   DCHECK(!path_.IsEmpty());
-  blob_data->AppendFile(path_, start, length,
-                        modification_time_ms / kMsPerSecond);
+  blob_data->AppendFile(path_, start, length, modification_time);
   return Blob::Create(BlobDataHandle::Create(std::move(blob_data), length));
 }
 
-void File::CaptureSnapshot(uint64_t& snapshot_size,
-                           double& snapshot_modification_time_ms) const {
+void File::CaptureSnapshot(
+    uint64_t& snapshot_size,
+    base::Optional<base::Time>& snapshot_modification_time) const {
   if (HasValidSnapshotMetadata()) {
     snapshot_size = *snapshot_size_;
-    snapshot_modification_time_ms = snapshot_modification_time_ms_;
+    snapshot_modification_time =
+        JsTimeToOptionalTime(snapshot_modification_time_ms_);
     return;
   }
 
@@ -392,12 +389,12 @@ void File::CaptureSnapshot(uint64_t& snapshot_size,
   FileMetadata metadata;
   if (!HasBackingFile() || !GetFileMetadata(path_, metadata)) {
     snapshot_size = 0;
-    snapshot_modification_time_ms = InvalidFileTime();
+    snapshot_modification_time = base::nullopt;
     return;
   }
 
   snapshot_size = static_cast<uint64_t>(metadata.length);
-  snapshot_modification_time_ms = ToJsTimeOrNaN(metadata.modification_time);
+  snapshot_modification_time = metadata.modification_time;
 }
 
 void File::AppendTo(BlobData& blob_data) const {
@@ -409,10 +406,10 @@ void File::AppendTo(BlobData& blob_data) const {
   // FIXME: This involves synchronous file operation. We need to figure out how
   // to make it asynchronous.
   uint64_t size;
-  double modification_time_ms;
-  CaptureSnapshot(size, modification_time_ms);
+  base::Optional<base::Time> modification_time;
+  CaptureSnapshot(size, modification_time);
   DCHECK(!path_.IsEmpty());
-  blob_data.AppendFile(path_, 0, size, modification_time_ms / kMsPerSecond);
+  blob_data.AppendFile(path_, 0, size, modification_time);
 }
 
 bool File::HasSameSource(const File& other) const {

third_party/blink/renderer/core/fileapi/file.h

@@ -219,8 +219,9 @@ class CORE_EXPORT File final : public Blob {
 
   // Note that this involves synchronous file operation. Think twice before
   // calling this function.
-  void CaptureSnapshot(uint64_t& snapshot_size,
-                       double& snapshot_modification_time_ms) const;
+  void CaptureSnapshot(
+      uint64_t& snapshot_size,
+      base::Optional<base::Time>& snapshot_modification_time) const;
 
   // Returns true if this has a valid snapshot metadata
   // (i.e. m_snapshotSize >= 0).

third_party/blink/renderer/modules/filesystem/file_system_dispatcher.cc

@@ -575,7 +575,7 @@ void FileSystemDispatcher::DidCreateSnapshotFile(
 
     auto blob_data = std::make_unique<BlobData>();
     blob_data->AppendFile(file_metadata.platform_path, 0, file_metadata.length,
-                          InvalidFileTime());
+                          base::nullopt);
     scoped_refptr<BlobDataHandle> snapshot_blob =
         BlobDataHandle::Create(std::move(blob_data), file_metadata.length);
 

third_party/blink/renderer/platform/blob/blob_data.cc

@@ -120,24 +120,23 @@ std::unique_ptr<BlobData> BlobData::CreateForFileWithUnknownSize(
 
 std::unique_ptr<BlobData> BlobData::CreateForFileWithUnknownSize(
     const String& path,
-    double expected_modification_time) {
+    const base::Optional<base::Time>& expected_modification_time) {
   std::unique_ptr<BlobData> data = base::WrapUnique(
       new BlobData(FileCompositionStatus::SINGLE_UNKNOWN_SIZE_FILE));
-  data->elements_.push_back(DataElement::NewFile(DataElementFile::New(
-      WebStringToFilePath(path), 0, BlobData::kToEndOfFile,
-      base::Time::FromDoubleT(expected_modification_time))));
+  data->elements_.push_back(DataElement::NewFile(
+      DataElementFile::New(WebStringToFilePath(path), 0, BlobData::kToEndOfFile,
+                           expected_modification_time)));
   return data;
 }
 
 std::unique_ptr<BlobData> BlobData::CreateForFileSystemURLWithUnknownSize(
     const KURL& file_system_url,
-    double expected_modification_time) {
+    const base::Optional<base::Time>& expected_modification_time) {
   std::unique_ptr<BlobData> data = base::WrapUnique(
       new BlobData(FileCompositionStatus::SINGLE_UNKNOWN_SIZE_FILE));
-  data->elements_.push_back(
-      DataElement::NewFileFilesystem(DataElementFilesystemURL::New(
-          file_system_url, 0, BlobData::kToEndOfFile,
-          base::Time::FromDoubleT(expected_modification_time))));
+  data->elements_.push_back(DataElement::NewFileFilesystem(
+      DataElementFilesystemURL::New(file_system_url, 0, BlobData::kToEndOfFile,
+                                    expected_modification_time)));
   return data;
 }
 
@@ -162,10 +161,11 @@ void BlobData::AppendData(scoped_refptr<RawData> data) {
   AppendDataInternal(base::make_span(data->data(), data->length()), data);
 }
 
-void BlobData::AppendFile(const String& path,
+void BlobData::AppendFile(
+    const String& path,
     int64_t offset,
     int64_t length,
-                          double expected_modification_time) {
+    const base::Optional<base::Time>& expected_modification_time) {
   DCHECK_EQ(file_composition_, FileCompositionStatus::NO_UNKNOWN_SIZE_FILES)
       << "Blobs with a unknown-size file cannot have other items.";
   DCHECK_NE(length, BlobData::kToEndOfFile)
@@ -177,8 +177,7 @@ void BlobData::AppendFile(const String& path,
   if (length == 0)
     return;
   elements_.push_back(DataElement::NewFile(DataElementFile::New(
-      WebStringToFilePath(path), offset, length,
-      base::Time::FromDoubleT(expected_modification_time))));
+      WebStringToFilePath(path), offset, length, expected_modification_time)));
 }
 
 void BlobData::AppendBlob(scoped_refptr<BlobDataHandle> data_handle,
@@ -195,10 +194,11 @@ void BlobData::AppendBlob(scoped_refptr<BlobDataHandle> data_handle,
       DataElementBlob::New(data_handle->CloneBlobRemote(), offset, length)));
 }
 
-void BlobData::AppendFileSystemURL(const KURL& url,
+void BlobData::AppendFileSystemURL(
+    const KURL& url,
     int64_t offset,
     int64_t length,
-                                   double expected_modification_time) {
+    const base::Optional<base::Time>& expected_modification_time) {
   DCHECK_EQ(file_composition_, FileCompositionStatus::NO_UNKNOWN_SIZE_FILES)
       << "Blobs with a unknown-size file cannot have other items.";
   // Skip zero-byte items, as they don't matter for the contents of the blob.
@@ -206,8 +206,7 @@ void BlobData::AppendFileSystemURL(const KURL& url,
     return;
   elements_.push_back(
       DataElement::NewFileFilesystem(DataElementFilesystemURL::New(
-          url, offset, length,
-          base::Time::FromDoubleT(expected_modification_time))));
+          url, offset, length, expected_modification_time)));
 }
 
 void BlobData::AppendText(const String& text,

third_party/blink/renderer/platform/blob/blob_data.h

@@ -113,10 +113,10 @@ class PLATFORM_EXPORT BlobData {
       const String& path);
   static std::unique_ptr<BlobData> CreateForFileWithUnknownSize(
       const String& path,
-      double expected_modification_time);
+      const base::Optional<base::Time>& expected_modification_time);
   static std::unique_ptr<BlobData> CreateForFileSystemURLWithUnknownSize(
       const KURL& file_system_url,
-      double expected_modification_time);
+      const base::Optional<base::Time>& expected_modification_time);
 
   // Detaches from current thread so that it can be passed to another thread.
   void DetachFromCurrentThread();
@@ -134,17 +134,18 @@ class PLATFORM_EXPORT BlobData {
   void AppendFile(const String& path,
                   int64_t offset,
                   int64_t length,
-                  double expected_modification_time);
+                  const base::Optional<base::Time>& expected_modification_time);
 
   // The given blob must not be a file with unknown size. Please use the
   // File::appendTo instead.
   void AppendBlob(scoped_refptr<BlobDataHandle>,
                   int64_t offset,
                   int64_t length);
-  void AppendFileSystemURL(const KURL&,
+  void AppendFileSystemURL(
+      const KURL&,
       int64_t offset,
       int64_t length,
-                           double expected_modification_time);
+      const base::Optional<base::Time>& expected_modification_time);
   void AppendText(const String&, bool normalize_line_endings_to_native);
 
   // The value of the size property for a Blob who has this data.

third_party/blink/renderer/platform/blob/blob_data_test.cc

@@ -284,8 +284,8 @@ TEST_F(BlobDataHandleTest, CreateFromEmptyElements) {
   auto data = std::make_unique<BlobData>();
   data->AppendBytes(small_test_data_.data(), 0);
   data->AppendBlob(empty_blob_, 0, 0);
-  data->AppendFile("path", 0, 0, 0.0);
-  data->AppendFileSystemURL(NullURL(), 0, 0, 0.0);
+  data->AppendFile("path", 0, 0, base::Time::UnixEpoch());
+  data->AppendFileSystemURL(NullURL(), 0, 0, base::Time::UnixEpoch());
 
   TestCreateBlob(std::move(data), {});
 }
@@ -359,18 +359,17 @@ TEST_F(BlobDataHandleTest, CreateFromMergedSmallAndLargeBytes) {
 }
 
 TEST_F(BlobDataHandleTest, CreateFromFileAndFileSystemURL) {
-  double timestamp1 = base::Time::Now().ToDoubleT();
-  double timestamp2 = timestamp1 + 1;
+  base::Time timestamp1 = base::Time::Now();
+  base::Time timestamp2 = timestamp1 + base::TimeDelta::FromSeconds(1);
   KURL url(NullURL(), "http://example.com/");
   auto data = std::make_unique<BlobData>();
   data->AppendFile("path", 4, 32, timestamp1);
   data->AppendFileSystemURL(url, 15, 876, timestamp2);
 
   Vector<ExpectedElement> expected_elements;
-  expected_elements.push_back(ExpectedElement::File(
-      "path", 4, 32, base::Time::FromDoubleT(timestamp1)));
-  expected_elements.push_back(ExpectedElement::FileFilesystem(
-      url, 15, 876, base::Time::FromDoubleT(timestamp2)));
+  expected_elements.push_back(ExpectedElement::File("path", 4, 32, timestamp1));
+  expected_elements.push_back(
+      ExpectedElement::FileFilesystem(url, 15, 876, timestamp2));
 
   TestCreateBlob(std::move(data), std::move(expected_elements));
 }
@@ -385,11 +384,11 @@ TEST_F(BlobDataHandleTest, CreateFromFileWithUnknownSize) {
 }
 
 TEST_F(BlobDataHandleTest, CreateFromFilesystemFileWithUnknownSize) {
-  double timestamp = base::Time::Now().ToDoubleT();
+  base::Time timestamp = base::Time::Now();
   KURL url(NullURL(), "http://example.com/");
   Vector<ExpectedElement> expected_elements;
-  expected_elements.push_back(ExpectedElement::FileFilesystem(
-      url, 0, uint64_t(-1), base::Time::FromDoubleT(timestamp)));
+  expected_elements.push_back(
+      ExpectedElement::FileFilesystem(url, 0, uint64_t(-1), timestamp));
 
   TestCreateBlob(
       BlobData::CreateForFileSystemURLWithUnknownSize(url, timestamp),

third_party/blink/renderer/platform/file_metadata.h

@@ -85,6 +85,22 @@ inline double ToJsTimeOrNaN(base::Optional<base::Time> time) {
   return time ? time->ToJsTimeIgnoringNull() : InvalidFileTime();
 }
 
+// TODO(crbug.com/988343): Temporary conversion function. This should be
+// removed.
+inline base::Optional<base::Time> JsTimeToOptionalTime(double ms) {
+  if (!IsValidFileTime(ms))
+    return base::nullopt;
+  return base::Time::FromJsTime(ms);
+}
+
+// TODO(crbug.com/988343): Temporary conversion function. This should be
+// removed.
+inline base::Optional<base::Time> DoubleTToOptionalTime(double ms) {
+  if (!IsValidFileTime(ms))
+    return base::nullopt;
+  return base::Time::FromDoubleT(ms);
+}
+
 inline base::Optional<base::Time> NullableTimeToOptionalTime(base::Time time) {
   if (time.is_null())
     return base::nullopt;