Add support for My Maps maps in Chrome OS Drive integration.

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 18 matching lines @@
   const char* mime_type;
   const char* extension;
 };
 
 const HostedDocumentKind kHostedDocumentKinds[] = {
     {kGoogleDocumentMimeType,     ".gdoc"},
     {kGoogleSpreadsheetMimeType,  ".gsheet"},
     {kGooglePresentationMimeType, ".gslides"},
     {kGoogleDrawingMimeType,      ".gdraw"},
     {kGoogleTableMimeType,        ".gtable"},
-    {kGoogleFormMimeType,         ".gform"}
+    {kGoogleFormMimeType,         ".gform"},
+    {kGoogleMapMimeType,          ".gmaps"},
 };
 
 const char kUnknownHostedDocumentExtension[] = ".glink";
 
 }  // namespace
 
 std::string EscapeQueryStringValue(const std::string& str) {
   std::string result;
   result.reserve(str.size());
   for (size_t i = 0; i < str.size(); ++i) {
@@ skipping 280 matching lines @@
   const std::string extension = base::FilePath(path.Extension()).AsUTF8Unsafe();
   for (size_t i = 0; i < arraysize(kHostedDocumentKinds); ++i) {
     if (extension == kHostedDocumentKinds[i].extension)
       return true;
   }
   return extension == kUnknownHostedDocumentExtension;
 }
 
 }  // namespace util
 }  // namespace drive