Change the GraphicsContext interface to be more consistent

UI/NativeApp.cpp

@@ -177,7 +177,6 @@ std::string config_filename;
 // Really need to clean this mess of globals up... but instead I add more :P
 bool g_TakeScreenshot;
 static bool resized = false;
-static bool restarting = false;
 
 static int renderCounter = 0;
 
@@ -775,7 +774,6 @@ void NativeInit(int argc, const char *argv[], const CommandLineOptions &cmdLineO
 	Achievements::Initialize();
 
 	// Must be done restarting by now.
-	restarting = false;
 	g_nativeMainThreadReady = true;
 }
 
@@ -1634,14 +1632,6 @@ void NativeResized() {
 	resized = true;
 }
 
-void NativeSetRestarting() {
-	restarting = true;
-}
-
-bool NativeIsRestarting() {
-	return restarting;
-}
-
 void NativeShutdown() {
 	INFO_LOG(Log::System, "NativeShutdown begin");
 	ClearAchievementsHostOverride();
@@ -1682,10 +1672,7 @@ void NativeShutdown() {
 	ShaderTranslationShutdown();
 
 	// Avoid shutting this down when restarting core.
-	if (!restarting) {
-		g_logManager.Shutdown();
-	}
-
+	g_logManager.Shutdown();
 	g_threadManager.Teardown();
 
 #if !PPSSPP_PLATFORM(IOS)