Google drive forms should not appear in the "offline" tab of Files.app.

google_apis/drive/gdata_wapi_parser.cc

 // Copyright (c) 2012 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 "google_apis/drive/gdata_wapi_parser.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 518 matching lines @@
       if (kEntryKindMap[i].extension)
         return std::string(kEntryKindMap[i].extension);
       else
         return std::string();
     }
   }
   return std::string();
 }
 
 // static
+DriveEntryKind ResourceEntry::GetEntryKindFromExtension(
+    const std::string& extension) {
+  for (size_t i = 0; i < arraysize(kEntryKindMap); ++i) {
+    const char* document_extension = kEntryKindMap[i].extension;
+    if (document_extension && extension == document_extension)
+      return kEntryKindMap[i].kind;
+  }
+  return ENTRY_KIND_UNKNOWN;
+}
+
+// static
 int ResourceEntry::ClassifyEntryKindByFileExtension(
     const base::FilePath& file_path) {
 #if defined(OS_WIN)
   std::string file_extension = base::WideToUTF8(file_path.Extension());
 #else
   std::string file_extension = file_path.Extension();
 #endif
-  for (size_t i = 0; i < arraysize(kEntryKindMap); ++i) {
-    const char* document_extension = kEntryKindMap[i].extension;
-    if (document_extension && file_extension == document_extension)
-      return ClassifyEntryKind(kEntryKindMap[i].kind);
-  }
-  return 0;
+  return ClassifyEntryKind(GetEntryKindFromExtension(file_extension));
 }
 
 // static
 DriveEntryKind ResourceEntry::GetEntryKindFromTerm(
     const std::string& term) {
   if (!StartsWithASCII(term, kTermPrefix, false)) {
     DVLOG(1) << "Unexpected term prefix term " << term;
     return ENTRY_KIND_UNKNOWN;
   }
 
@@ skipping 312 matching lines @@
 bool AccountMetadata::Parse(const base::Value& value) {
   base::JSONValueConverter<AccountMetadata> converter;
   if (!converter.Convert(value, this)) {
     LOG(ERROR) << "Unable to parse: Invalid account metadata feed!";
     return false;
   }
   return true;
 }
 
 }  // namespace google_apis