Remove GetFileModificationTime and RebindFileUtilitiesForTesting.

These functions are unused.

Change-Id: I5cb37b52bf5518490a96d533ffe417cbc920993b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2578222Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Tal Pressman <talp@google.com>
Cr-Commit-Position: refs/heads/master@{#834590}

third_party/blink/renderer/platform/file_metadata.cc

@@ -78,24 +78,6 @@ bool GetFileSize(const String& path, int64_t& result) {
   return true;
 }
 
-bool GetFileModificationTime(const String& path,
-                             base::Optional<base::Time>& result) {
-  FileMetadata metadata;
-  if (!GetFileMetadata(path, metadata))
-    return false;
-  result = metadata.modification_time;
-  return true;
-}
-
-void RebindFileUtilitiesForTesting() {
-  auto& host = GetFileUtilitiesHost();
-  if (host) {
-    host.Unbind().reset();
-  }
-  Platform::Current()->GetBrowserInterfaceBroker()->GetInterface(
-      host.BindNewPipeAndPassReceiver());
-}
-
 bool GetFileMetadata(const String& path, FileMetadata& metadata) {
   auto& host = GetFileUtilitiesHost();
   if (!host) {

third_party/blink/renderer/platform/file_metadata.h

@@ -64,14 +64,9 @@ class FileMetadata {
 };
 
 PLATFORM_EXPORT bool GetFileSize(const String&, int64_t& result);
-PLATFORM_EXPORT bool GetFileModificationTime(
-    const String&,
-    base::Optional<base::Time>& result);
 PLATFORM_EXPORT bool GetFileMetadata(const String&, FileMetadata&);
 PLATFORM_EXPORT KURL FilePathToURL(const String&);
 
-PLATFORM_EXPORT void RebindFileUtilitiesForTesting();
-
 inline base::Optional<base::Time> NullableTimeToOptionalTime(base::Time time) {
   if (time.is_null())
     return base::nullopt;