Add experiments info to crash dumps.

chrome/common/child_process_logging_win.cc

Index: chrome/common/child_process_logging_win.cc
===================================================================
--- chrome/common/child_process_logging_win.cc	(revision 125856)
+++ chrome/common/child_process_logging_win.cc	(working copy)
@@ -44,6 +44,15 @@
 //   void __declspec(dllexport) __cdecl SetCommandLine
 typedef void (__cdecl *MainSetCommandLine)(const CommandLine*);
 
+// exported in breakpad_win.cc:
+//   void __declspec(dllexport) __cdecl InitExperimentList
+typedef void (__cdecl *MainInitExperimentList)();
+
+// exported in breakpad_win.cc:
+//   void __declspec(dllexport) __cdecl AddFieldTrialGroup
+typedef void (__cdecl *MainAddFieldTrialGroup)(const std::string&,
+                                               const std::string&);
+
 void SetActiveURL(const GURL& url) {
   static MainSetActiveURL set_active_url = NULL;
   // note: benign race condition on set_active_url.
@@ -164,6 +173,35 @@
   (set_command_line)(command_line);
 }
 
+void InitExperimentList() {
+  static MainInitExperimentList init_experiment_list = NULL;
+  if (!init_experiment_list) {
+    HMODULE exe_module = GetModuleHandle(chrome::kBrowserProcessExecutableName);
+    if (!exe_module)
+      return;
+    init_experiment_list = reinterpret_cast<MainInitExperimentList>(
+        GetProcAddress(exe_module, "InitExperimentList"));
+    if (!init_experiment_list)
+      return;
+  }
+  (init_experiment_list)();
+}
+
+void AddFieldTrialGroup(const std::string& field_trial_name,
+                        const std::string& group_name) {
+  static MainAddFieldTrialGroup add_field_trial_group = NULL;
+  if (!add_field_trial_group) {
+    HMODULE exe_module = GetModuleHandle(chrome::kBrowserProcessExecutableName);
+    if (!exe_module)
+      return;
+    add_field_trial_group = reinterpret_cast<MainAddFieldTrialGroup>(
+        GetProcAddress(exe_module, "AddFieldTrialGroup"));
+    if (!add_field_trial_group)
+      return;
+  }
+  (add_field_trial_group)(field_trial_name, group_name);
+}
+
 void SetNumberOfViews(int number_of_views) {
   static MainSetNumberOfViews set_number_of_views = NULL;
   if (!set_number_of_views) {