Switch to using the message loop rather than gtk_main().

base/logging.h

Index: base/logging.h
diff --git a/base/logging.h b/base/logging.h
index 95cbfac7726027295fc84f57713c9fa3828e827f..5fa568135e269aa5c53b1800c29a15ba57bb6547 100644
--- a/base/logging.h
+++ b/base/logging.h
@@ -513,6 +513,14 @@ inline std::ostream& operator<<(std::ostream& out, const std::wstring& wstr) {
 #define NOTIMPLEMENTED_POLICY 4
 #endif
 
+#if defined(COMPILER_GCC)
+// On Linux, with GCC, we can use __PRETTY_FUNCTION__ to get the demangled name
+// of the current function in the NOTIMPLEMENTED message.
+#define NOTIMPLEMENTED_MSG "Not implemented reached in " << __PRETTY_FUNCTION__
+#else
+#define NOTIMPLEMENTED_MSG "NOT IMPLEMENTED"
+#endif
+
 #if NOTIMPLEMENTED_POLICY == 0
 #define NOTIMPLEMENTED() ;
 #elif NOTIMPLEMENTED_POLICY == 1
@@ -523,11 +531,11 @@ inline std::ostream& operator<<(std::ostream& out, const std::wstring& wstr) {
 #elif NOTIMPLEMENTED_POLICY == 3
 #define NOTIMPLEMENTED() NOTREACHED()
 #elif NOTIMPLEMENTED_POLICY == 4
-#define NOTIMPLEMENTED() LOG(ERROR) << "NOT IMPLEMENTED!"
+#define NOTIMPLEMENTED() LOG(ERROR) << NOTIMPLEMENTED_MSG
 #elif NOTIMPLEMENTED_POLICY == 5
 #define NOTIMPLEMENTED() do {\
   static int count = 0;\
-  LOG_IF(ERROR, 0 == count++) << "NOT IMPLEMENTED!";\
+  LOG_IF(ERROR, 0 == count++) << NOTIMPLEMENTED_MSG;\
 } while(0)
 #endif