Add experiments info to crash dumps.

chrome/app/breakpad_win.h

Index: chrome/app/breakpad_win.h
===================================================================
--- chrome/app/breakpad_win.h	(revision 130670)
+++ chrome/app/breakpad_win.h	(working copy)
@@ -8,7 +8,27 @@
 
 #include <windows.h>
 #include <string>
+#include <vector>
 
+namespace google_breakpad {
+
+struct CustomInfoEntry;
+}
+
+namespace breakpad_win {
+
+// A pointer to the custom entries that we send in the event of a crash. We need
+// this pointer, along with the offsets into it below (and some private ones),
+// so that we can keep the data updated as the state of the browser changes.
+extern std::vector<google_breakpad::CustomInfoEntry>* g_custom_entries;
+
+// These two are here because they are needed by breakpad_field_trial_win as
+// well as breakpad_unittest_win.
+extern size_t g_num_of_experiments_offset;
+extern size_t g_experiment_chunks_offset;
+
+}  // namespace breakpad_win
+
 // The maximum number of 64-char URL chunks we will report.
 static const int kMaxUrlChunks = 8;
 
@@ -22,4 +42,11 @@
 // a dialog asking for permission to continue execution or to exit now.
 bool ShowRestartDialogIfCrashed(bool* exit_now);
 
+namespace testing {
+
+// Testing entry point for calling a function from the unnamed namespace.
+void InitCustomInfoEntries();
+
+}
+
 #endif  // CHROME_APP_BREAKPAD_WIN_H_