Add GPU fingerprint information to breakpad microdumps.

src/client/linux/handler/microdump_extra_info.h

Index: src/client/linux/handler/microdump_extra_info.h
diff --git a/src/common/simple_string_dictionary.cc b/src/client/linux/handler/microdump_extra_info.h
similarity index 74%
copy from src/common/simple_string_dictionary.cc
copy to src/client/linux/handler/microdump_extra_info.h
index e0a74ceeb4ba0ac05e12c78583508a30ca40d50a..b9c3d30dc06ef46972362b95eedff6f6a513ac98 100644
--- a/src/common/simple_string_dictionary.cc
+++ b/src/client/linux/handler/microdump_extra_info.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2007, Google Inc.
+// Copyright 2015 Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@@ -27,19 +27,22 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#include "common/simple_string_dictionary.h"
+#ifndef CLIENT_LINUX_HANDLER_MICRODUMP_EXTRA_INFO_H_
+#define CLIENT_LINUX_HANDLER_MICRODUMP_EXTRA_INFO_H_
 
 namespace google_breakpad {
 
-namespace {
+struct MicrodumpExtraInfo {
+  // Strings pointed to by this struct are not copied, and are
+  // expected to remain valid for the lifetime of the process.
+  const char* build_fingerprint;
+  const char* product_info;
+  const char* gpu_fingerprint;
 
-// In C++98 (ISO 14882), section 9.5.1 says that a union cannot have a member
-// with a non-trivial ctor, copy ctor, dtor, or assignment operator. Use this
-// property to ensure that Entry remains POD.
-union Compile_Assert {
-  NonAllocatingMap<1, 1, 1>::Entry Compile_Assert__entry_must_be_pod;
+  MicrodumpExtraInfo()
+      : build_fingerprint(NULL), product_info(NULL), gpu_fingerprint(NULL) {}
 };
 
 }
 
-}  // namespace google_breakpad
+#endif  // CLIENT_LINUX_HANDLER_MICRODUMP_EXTRA_INFO_H_