[Windows] Include the about:flags experiments in crash reports.

chrome/common/child_process_logging_win.cc

Index: chrome/common/child_process_logging_win.cc
===================================================================
--- chrome/common/child_process_logging_win.cc	(revision 100836)
+++ chrome/common/child_process_logging_win.cc	(working copy)
@@ -6,6 +6,7 @@
 
 #include <windows.h>
 
+#include "base/command_line.h"
 #include "base/string_util.h"
 #include "base/string_number_conversions.h"
 #include "base/stringprintf.h"
@@ -39,6 +40,10 @@
 //   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*);
+
 void SetActiveURL(const GURL& url) {
   static MainSetActiveURL set_active_url = NULL;
   // note: benign race condition on set_active_url.
@@ -145,6 +150,20 @@
       UTF8ToUTF16(gpu_info.vertex_shader_version).c_str());
 }
 
+void SetCommandLine(const CommandLine* command_line) {
+  static MainSetCommandLine set_command_line = NULL;
+  if (!set_command_line) {
+    HMODULE exe_module = GetModuleHandle(chrome::kBrowserProcessExecutableName);
+    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 SetNumberOfViews(int number_of_views) {
   static MainSetNumberOfViews set_number_of_views = NULL;
   if (!set_number_of_views) {