Make WebAPK server use Murmur2 Hash version compatible with WebAPK server

chrome/browser/android/webapk/webapk_icon_hasher.cc

 // Copyright 2016 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/android/webapk/webapk_icon_hasher.h"
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "net/http/http_status_code.h"
 #include "net/url_request/url_fetcher.h"
@@ skipping 29 matching lines @@
     callback_.Run("");
     return;
   }
 
   // WARNING: We are running in the browser process. |raw_image_data| is the
   // image's raw, unsanitized bytes from the web. |raw_image_data| may contain
   // malicious data. Decoding unsanitized bitmap data to an SkBitmap in the
   // browser process is a security bug.
   std::string raw_image_data;
   source->GetResponseAsString(&raw_image_data);
-  uint64_t hash = MurmurHash64B(&raw_image_data.front(), raw_image_data.size(),
+  uint64_t hash = MurmurHash64A(&raw_image_data.front(), raw_image_data.size(),
                                 kMurmur2HashSeed);
   callback_.Run(base::Uint64ToString(hash));
 }