Render/pepper hang debugging: generate dumps for the browser and renderer processes if users kill a…

chrome/app/breakpad_win.cc

Index: chrome/app/breakpad_win.cc
diff --git a/chrome/app/breakpad_win.cc b/chrome/app/breakpad_win.cc
index d4f7eed7103a60aa8a368ecc485f0cbd9eca260f..ca1e66734a3351ee66e144104f52aeff56365ba3 100644
--- a/chrome/app/breakpad_win.cc
+++ b/chrome/app/breakpad_win.cc
@@ -130,6 +130,22 @@ InjectDumpProcessWithoutCrash(HANDLE process) {
                             0, 0, NULL);
 }
 
+// The following two functions do exactly the same thing as the two above. But
+// we want the signatures to be different so that we can easily track them in
+// crash reports.
+// TODO(yzshen): Remove when enough information is collected and the hang rate
+// of pepper/renderer processes is reduced.
+DWORD WINAPI DumpForHangDebuggingThread(void*) {
+  DumpProcessWithoutCrash();
+  return 0;
+}
+
+extern "C" HANDLE __declspec(dllexport) __cdecl
+InjectDumpForHangDebugging(HANDLE process) {
+  return CreateRemoteThread(process, NULL, 0, DumpForHangDebuggingThread,
+                            0, 0, NULL);
+}
+
 // Reduces the size of the string |str| to a max of 64 chars. Required because
 // breakpad's CustomInfoEntry raises an invalid_parameter error if the string
 // we want to set is longer.