Add GPU fingerprint information to breakpad microdumps.

src/client/linux/microdump_writer/microdump_writer.cc

Index: src/client/linux/microdump_writer/microdump_writer.cc
diff --git a/src/client/linux/microdump_writer/microdump_writer.cc b/src/client/linux/microdump_writer/microdump_writer.cc
index d2eaa6ee69f7ae20f0464716ba571e21810b6fcb..d8ac3d22abde7e1311121e67adc1fa0ad49a7e31 100644
--- a/src/client/linux/microdump_writer/microdump_writer.cc
+++ b/src/client/linux/microdump_writer/microdump_writer.cc
@@ -38,6 +38,7 @@
 #include "client/linux/dump_writer_common/ucontext_reader.h"
 #include "client/linux/handler/exception_handler.h"
 #include "client/linux/log/log.h"
+#include "client/linux/handler/microdump_extra_info.h"
 #include "client/linux/minidump_writer/linux_ptrace_dumper.h"
 #include "common/linux/linux_libc_support.h"
 
@@ -48,6 +49,7 @@ using google_breakpad::LinuxDumper;
 using google_breakpad::LinuxPtraceDumper;
 using google_breakpad::MappingInfo;
 using google_breakpad::MappingList;
+using google_breakpad::MicrodumpExtraInfo;
 using google_breakpad::RawContextCPU;
 using google_breakpad::ThreadInfo;
 using google_breakpad::UContextReader;
@@ -58,8 +60,7 @@ class MicrodumpWriter {
  public:
   MicrodumpWriter(const ExceptionHandler::CrashContext* context,
                   const MappingList& mappings,
-                  const char* build_fingerprint,
-                  const char* product_info,
+                  const MicrodumpExtraInfo& microdump_extra_info,
                   LinuxDumper* dumper)
       : ucontext_(context ? &context->context : NULL),
 #if !defined(__ARM_EABI__) && !defined(__mips__)
@@ -67,8 +68,7 @@ class MicrodumpWriter {
 #endif
         dumper_(dumper),
         mapping_list_(mappings),
-        build_fingerprint_(build_fingerprint),
-        product_info_(product_info),
+        microdump_extra_info_(microdump_extra_info),
         log_line_(NULL) {
     log_line_ = reinterpret_cast<char*>(Alloc(kLineBufferSize));
     if (log_line_)
@@ -92,6 +92,7 @@ class MicrodumpWriter {
     LogLine("-----BEGIN BREAKPAD MICRODUMP-----");
     DumpProductInformation();
     DumpOSInformation();
+    DumpGPUInformation();
     success = DumpCrashingThread();
     if (success)
       success = DumpMappings();
@@ -149,8 +150,8 @@ class MicrodumpWriter {
 
   void DumpProductInformation() {
     LogAppend("V ");
-    if (product_info_) {
-      LogAppend(product_info_);
+    if (microdump_extra_info_.product_info) {
+      LogAppend(microdump_extra_info_.product_info);
     } else {
       LogAppend("UNKNOWN:0.0.0.0");
     }
@@ -200,8 +201,8 @@ class MicrodumpWriter {
 
     // If the client has attached a build fingerprint to the MinidumpDescriptor
     // use that one. Otherwise try to get some basic info from uname().
-    if (build_fingerprint_) {
-      LogAppend(build_fingerprint_);
+    if (microdump_extra_info_.build_fingerprint) {
+      LogAppend(microdump_extra_info_.build_fingerprint);
     } else if (has_uts_info) {
       LogAppend(uts.release);
       LogAppend(" ");
@@ -212,6 +213,16 @@ class MicrodumpWriter {
     LogCommitLine();
   }
 
+  void DumpGPUInformation() {
+    LogAppend("G ");
+    if (microdump_extra_info_.gpu_fingerprint) {
+      LogAppend(microdump_extra_info_.gpu_fingerprint);
+    } else {
+      LogAppend("UNKNOWN");
+    }
+    LogCommitLine();
+  }
+
   bool DumpThreadStack(uint32_t thread_id,
                        uintptr_t stack_pointer,
                        int max_stack_len,
@@ -390,8 +401,7 @@ class MicrodumpWriter {
 #endif
   LinuxDumper* dumper_;
   const MappingList& mapping_list_;
-  const char* const build_fingerprint_;
-  const char* const product_info_;
+  const MicrodumpExtraInfo microdump_extra_info_;
   char* log_line_;
 };
 }  // namespace
@@ -402,8 +412,7 @@ bool WriteMicrodump(pid_t crashing_process,
                     const void* blob,
                     size_t blob_size,
                     const MappingList& mappings,
-                    const char* build_fingerprint,
-                    const char* product_info) {
+                    const MicrodumpExtraInfo &microdump_extra_info) {
   LinuxPtraceDumper dumper(crashing_process);
   const ExceptionHandler::CrashContext* context = NULL;
   if (blob) {
@@ -415,8 +424,7 @@ bool WriteMicrodump(pid_t crashing_process,
     dumper.set_crash_signal(context->siginfo.si_signo);
     dumper.set_crash_thread(context->tid);
   }
-  MicrodumpWriter writer(context, mappings, build_fingerprint, product_info,
-                         &dumper);
+  MicrodumpWriter writer(context, mappings, microdump_extra_info, &dumper);
   if (!writer.Init())
     return false;
   return writer.Dump();