Add experiments info to crash dumps.

chrome/common/child_process_logging_win.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/common/child_process_logging.h"
 
 #include <windows.h>
 
 #include "base/command_line.h"
 #include "base/string_util.h"
@@ skipping 30 matching lines @@
 typedef void (__cdecl *MainSetPrinterInfo)(const wchar_t*);
 
 // exported in breakpad_win.cc:
 //   void __declspec(dllexport) __cdecl SetNumberOfViews.
 typedef void (__cdecl *MainSetNumberOfViews)(int);
 
 // exported in breakpad_win.cc:
 //   void __declspec(dllexport) __cdecl SetCommandLine
 typedef void (__cdecl *MainSetCommandLine)(const CommandLine*);
 
+// exported in breakpad_field_trial_win.cc:
+//   void __declspec(dllexport) __cdecl SetExperimentList
+typedef void (__cdecl *MainSetExperimentList)(const std::vector<string16>&);
+
 void SetActiveURL(const GURL& url) {
   static MainSetActiveURL set_active_url = NULL;
   // note: benign race condition on set_active_url.
   if (!set_active_url) {
     HMODULE exe_module = GetModuleHandle(chrome::kBrowserProcessExecutableName);
     if (!exe_module)
       return;
     set_active_url = reinterpret_cast<MainSetActiveURL>(
         GetProcAddress(exe_module, "SetActiveURL"));
     if (!set_active_url)
@@ skipping 114 matching lines @@
     if (!exe_module)
       return;
     set_command_line = reinterpret_cast<MainSetCommandLine>(
         GetProcAddress(exe_module, "SetCommandLine"));
     if (!set_command_line)
       return;
   }
   (set_command_line)(command_line);
 }
 
+void SetExperimentList(const std::vector<string16>& state) {
+  static MainSetExperimentList init_experiment_list = NULL;

[robertshield, 2012/04/05 00:36:41]

Note that this is not thread safe, which probably doesn't matter here (I see the
same pattern is followed throughout this file). Would you consider adding a "NOT
THREAD SAFE" warning to the header file?

[MAD, 2012/04/05 02:31:12]

Done.

+  if (!init_experiment_list) {
+    HMODULE exe_module = GetModuleHandle(chrome::kBrowserProcessExecutableName);
+    if (!exe_module)
+      return;
+    init_experiment_list = reinterpret_cast<MainSetExperimentList>(
+        GetProcAddress(exe_module, "SetExperimentList"));
+    if (!init_experiment_list)
+      return;
+  }
+  (init_experiment_list)(state);
+}
+
 void SetNumberOfViews(int number_of_views) {
   static MainSetNumberOfViews set_number_of_views = NULL;
   if (!set_number_of_views) {
     HMODULE exe_module = GetModuleHandle(chrome::kBrowserProcessExecutableName);
     if (!exe_module)
       return;
     set_number_of_views = reinterpret_cast<MainSetNumberOfViews>(
         GetProcAddress(exe_module, "SetNumberOfViews"));
     if (!set_number_of_views)
       return;
   }
   (set_number_of_views)(number_of_views);
 }
 
 }  // namespace child_process_logging