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diff --git a/toolkit/crashreporter/google-breakpad/src/common/windows/pe_util.h b/toolkit/crashreporter/google-breakpad/src/common/windows/pe_util.h
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+// Copyright (c) 2019, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef COMMON_WINDOWS_PE_UTIL_H_
+#define COMMON_WINDOWS_PE_UTIL_H_
+
+#include <windows.h>
+
+#include "common/windows/module_info.h"
+
+namespace google_breakpad {
+
+using std::wstring;
+
+// Reads |pe_file| and populates |info|. Returns true on success.
+// Only supports PE32+ format, ie. a 64bit PE file.
+// Will fail if |pe_file| does not contain a valid CodeView record.
+bool ReadModuleInfo(const wstring& pe_file, PDBModuleInfo* info);
+
+// Reads |pe_file| and populates |info|. Returns true on success.
+bool ReadPEInfo(const wstring& pe_file, PEModuleInfo* info);
+
+// Reads |pe_file| and prints frame data (aka. unwind info) to |out_file|.
+// Only supports PE32+ format, ie. a 64bit PE file.
+bool PrintPEFrameData(const wstring& pe_file, FILE* out_file);
+
+// Combines a GUID |signature| and DWORD |age| to create a Breakpad debug
+// identifier.
+wstring GenerateDebugIdentifier(DWORD age, GUID signature);
+
+// Combines a DWORD |signature| and DWORD |age| to create a Breakpad debug
+// identifier.
+wstring GenerateDebugIdentifier(DWORD age, DWORD signature);
+
+// Converts |machine| enum value to the corresponding string used by Breakpad.
+// The enum is IMAGE_FILE_MACHINE_*, contained in winnt.h.
+constexpr const wchar_t* FileHeaderMachineToCpuString(WORD machine) {
+  switch (machine) {
+    case IMAGE_FILE_MACHINE_I386: {
+      return L"x86";
+    }
+    case IMAGE_FILE_MACHINE_IA64:
+    case IMAGE_FILE_MACHINE_AMD64: {
+      return L"x86_64";
+    }
+    default: { return L"unknown"; }
+  }
+}
+
+}  // namespace google_breakpad
+
+#endif  // COMMON_WINDOWS_PE_UTIL_H_