[gin] Fingerprint the V8 snapshot files on Windows and verify before loading the snapshot.

content/app/content_main_runner.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 "content/public/app/content_main_runner.h"
 
 #include <stdlib.h>
 
 #include "base/allocator/allocator_extension.h"
 #include "base/at_exit.h"
@@ skipping 712 matching lines @@
 
 #ifdef V8_USE_EXTERNAL_STARTUP_DATA
     int v8_natives_fd = base::GlobalDescriptors::GetInstance()->MaybeGet(
         kV8NativesDataDescriptor);
     int v8_snapshot_fd = base::GlobalDescriptors::GetInstance()->MaybeGet(
         kV8SnapshotDataDescriptor);
     if (v8_natives_fd != -1 && v8_snapshot_fd != -1) {
       CHECK(gin::IsolateHolder::LoadV8SnapshotFD(v8_natives_fd,
                                                  v8_snapshot_fd));
     } else {
-      CHECK(gin::IsolateHolder::LoadV8Snapshot());
+      CHECK(gin::IsolateHolder::LoadAndVerifyV8Snapshot());
     }
 #endif // V8_USE_EXTERNAL_STARTUP_DATA
 
 #else
     CHECK(base::i18n::InitializeICU());
 #ifdef V8_USE_EXTERNAL_STARTUP_DATA
-    CHECK(gin::IsolateHolder::LoadV8Snapshot());
+    CHECK(gin::IsolateHolder::LoadAndVerifyV8Snapshot());
 #endif // V8_USE_EXTERNAL_STARTUP_DATA
 #endif // OS_ANDROID
 
     InitializeStatsTable(command_line);
 
     if (delegate_)
       delegate_->PreSandboxStartup();
 
     if (!process_type.empty())
       CommonSubprocessInit(process_type);
@@ skipping 97 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(ContentMainRunnerImpl);
 };
 
 // static
 ContentMainRunner* ContentMainRunner::Create() {
   return new ContentMainRunnerImpl();
 }
 
 }  // namespace content