Remove unnecessary utilities from drive::util.

chrome/browser/drive/drive_api_util.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 "chrome/browser/drive/drive_api_util.h"
 
 #include <string>
 
 #include "base/files/file.h"
 #include "base/logging.h"
@@ skipping 26 matching lines @@
     {kGoogleDocumentMimeType,     ".gdoc"},
     {kGoogleSpreadsheetMimeType,  ".gsheet"},
     {kGooglePresentationMimeType, ".gslides"},
     {kGoogleDrawingMimeType,      ".gdraw"},
     {kGoogleTableMimeType,        ".gtable"},
     {kGoogleFormMimeType,         ".gform"}
 };
 
 }  // namespace
 
-
 std::string EscapeQueryStringValue(const std::string& str) {
   std::string result;
   result.reserve(str.size());
   for (size_t i = 0; i < str.size(); ++i) {
     if (str[i] == '\\' || str[i] == '\'') {
       result.push_back('\\');
     }
     result.push_back(str[i]);
   }
   return result;
@@ skipping 277 matching lines @@
 
     offset += result;
     base::MD5Update(&context, base::StringPiece(buffer.get(), result));
   }
 
   base::MD5Digest digest;
   base::MD5Final(&digest, &context);
   return MD5DigestToBase16(digest);
 }
 
-const char kWapiRootDirectoryResourceId[] = "folder:root";
-
 std::string GetHostedDocumentExtension(const std::string& mime_type) {
   for (size_t i = 0; i < arraysize(kHostedDocumentKinds); ++i) {
     if (mime_type == kHostedDocumentKinds[i].mime_type)
       return kHostedDocumentKinds[i].extension;
   }
   return std::string();
 }
 
-std::string GetHostedDocumentMimeType(const std::string& extension) {
-  for (size_t i = 0; i < arraysize(kHostedDocumentKinds); ++i) {
-    if (extension == kHostedDocumentKinds[i].extension)
-      return kHostedDocumentKinds[i].mime_type;
-  }
-  return std::string();
-}
-
 bool IsHostedDocument(const std::string& mime_type) {
   for (size_t i = 0; i < arraysize(kHostedDocumentKinds); ++i) {
     if (mime_type == kHostedDocumentKinds[i].mime_type)
       return true;
   }
   return false;
 }
 
 bool IsHostedDocumentByExtension(const std::string& extension) {
   for (size_t i = 0; i < arraysize(kHostedDocumentKinds); ++i) {
     if (extension == kHostedDocumentKinds[i].extension)
       return true;
   }
   return false;
 }
 
 }  // namespace util
 }  // namespace drive