Bug 1578378 - use 'false' instead of hidden static pref in non-nightly builds r=gw

Falls back to 'false' in non-nightly builds instead of using the gfx.webrender.start-debug-server pref, which is only available in nightly builds.

Differential Revision: https://phabricator.services.mozilla.com/D44743

--HG--
extra : moz-landing-system : lando

gfx/webrender_bindings/WebRenderAPI.cpp

@@ -75,12 +75,16 @@ class NewRenderer : public RendererEvent {
     bool supportLowPriorityTransactions = isMainWindow;
     bool supportPictureCaching = isMainWindow;
     wr::Renderer* wrRenderer = nullptr;
-    if (!wr_window_new(
-            aWindowId, mSize.width, mSize.height,
+    if (!wr_window_new(aWindowId, mSize.width, mSize.height,
                        supportLowPriorityTransactions, allow_texture_swizzling,
                        StaticPrefs::gfx_webrender_picture_caching() &&
                            supportPictureCaching,
-            StaticPrefs::gfx_webrender_start_debug_server(), compositor->gl(),
+#ifdef NIGHTLY_BUILD
+                       StaticPrefs::gfx_webrender_start_debug_server(),
+#else
+                       false,
+#endif
+                       compositor->gl(),
                        aRenderThread.GetProgramCache()
                            ? aRenderThread.GetProgramCache()->Raw()
                            : nullptr,
@@ -88,8 +92,9 @@ class NewRenderer : public RendererEvent {
                            ? aRenderThread.GetShaders()->RawShaders()
                            : nullptr,
                        aRenderThread.ThreadPool().Raw(), &WebRenderMallocSizeOf,
-            &WebRenderMallocEnclosingSizeOf, (uint32_t)wr::RenderRoot::Default,
-            mDocHandle, &wrRenderer, mMaxTextureSize)) {
+                       &WebRenderMallocEnclosingSizeOf,
+                       (uint32_t)wr::RenderRoot::Default, mDocHandle,
+                       &wrRenderer, mMaxTextureSize)) {
       // wr_window_new puts a message into gfxCriticalNote if it returns false
       return;
     }