DevTools: Move network request instrumentation points for timeline down the stack.

third_party/WebKit/Source/platform/instrumentation/inspector/PlatformIdentifiersFactory.h

Index: third_party/WebKit/Source/platform/instrumentation/inspector/PlatformIdentifiersFactory.h
diff --git a/third_party/WebKit/Source/platform/instrumentation/inspector/PlatformIdentifiersFactory.h b/third_party/WebKit/Source/platform/instrumentation/inspector/PlatformIdentifiersFactory.h
new file mode 100644
index 0000000000000000000000000000000000000000..69b84c201c01ff07fd1ce61324c63227a2cf0949
--- /dev/null
+++ b/third_party/WebKit/Source/platform/instrumentation/inspector/PlatformIdentifiersFactory.h
@@ -0,0 +1,29 @@
+// Copyright 2017 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.
+
+#ifndef PlatformIdentifiersFactory_h
+#define PlatformIdentifiersFactory_h
+
+#include "platform/PlatformExport.h"
+#include "wtf/Allocator.h"
+#include "wtf/text/WTFString.h"
+
+namespace blink {
+
+class PLATFORM_EXPORT PlatformIdentifiersFactory {
+  STATIC_ONLY(PlatformIdentifiersFactory);
+
+ public:
+  static String createIdentifier();
+
+  static String requestId(unsigned long identifier);
+
+ protected:
+  static String addProcessIdPrefixTo(int id);
+  static int removeProcessIdPrefixFrom(const String&, bool* ok);
+};
+
+}  // namespace blink
+
+#endif  // PlatformIdentifiersFactory_h