Bug 1464823 - Don't sync rendering on Mesa as the Mesa Wayland implementation is buggy.

diff --git a/gfx/gl/GLContextProviderEGL.cpp b/gfx/gl/GLContextProviderEGL.cpp
--- a/gfx/gl/GLContextProviderEGL.cpp
+++ b/gfx/gl/GLContextProviderEGL.cpp
@@ -273,20 +273,17 @@ GLContextEGLFactory::Create(EGLNativeWin
     if (!gl) {
         gfxCriticalNote << "Failed to create EGLContext!";
         mozilla::gl::DestroySurface(surface);
         return nullptr;
     }
 
     gl->MakeCurrent();
     gl->SetIsDoubleBuffered(doubleBuffered);
-    if (aWebRender && sEGLLibrary.IsANGLE()) {
-        MOZ_ASSERT(doubleBuffered);
-        sEGLLibrary.fSwapInterval(EGL_DISPLAY(), 0);
-    }
+    sEGLLibrary.fSwapInterval(EGL_DISPLAY(), 0);
     return gl.forget();
 }
 
 GLContextEGL::GLContextEGL(CreateContextFlags flags, const SurfaceCaps& caps,
                            bool isOffscreen, EGLConfig config, EGLSurface surface,
                            EGLContext context)
     : GLContext(flags, caps, nullptr, isOffscreen, false)
     , mConfig(config)