Create one row in crash report for each key/value pair in extra_info

Bug: internal b/171233251
Test: triggered crash and checked crash report
Change-Id: If24d4a2d74969b9ddb6cab002baba95c241cb210
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2530794Reviewed-by: Sergey Volk <servolk@chromium.org>
Reviewed-by: Yuchen Liu <yucliu@chromium.org>
Commit-Queue: Ying Ye <yingye@google.com>
Cr-Commit-Position: refs/heads/master@{#826431}

chromecast/crash/linux/minidump_uploader.cc

@@ -20,6 +20,7 @@
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/single_thread_task_runner.h"
+#include "base/strings/string_split.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "chromecast/base/cast_paths.h"
 #include "chromecast/base/pref_names.h"
@@ -45,8 +46,6 @@ const char kVirtualChannel[] = "virtual-channel";
 
 const char kLatestUiVersion[] = "latest-ui-version";
 
-const char kExtraInfoKey[] = "extra_info";
-
 typedef std::vector<std::unique_ptr<DumpInfo>> DumpList;
 
 std::unique_ptr<PrefService> CreatePrefService() {
@@ -253,7 +252,19 @@ bool MinidumpUploader::DoWork() {
       g.SetParameter("stadia_session_id", dump.params().stadia_session_id);
     }
     if (!dump.params().extra_info.empty()) {
-      g.SetParameter(kExtraInfoKey, dump.params().extra_info);
+      std::vector<std::string> pairs = base::SplitString(dump.params().extra_info,
+                                                         " ",
+                                                         base::TRIM_WHITESPACE,
+                                                         base::SPLIT_WANT_NONEMPTY
+                                                        );
+      for (const auto& pair : pairs) {
+        std::vector<std::string> key_value =
+                base::SplitString(pair, "=", base::TRIM_WHITESPACE,
+                                  base::SPLIT_WANT_NONEMPTY);
+        if (key_value.size() == 2) {
+          g.SetParameter(key_value[0], key_value[1]);
+        }
+      }
     }
 
     std::string response;