Remove ImmediateFlush mode

Change-Id: I7db113e66d81516b2beb5eefeddf488d9bfed2e5
Reviewed-on: https://skia-review.googlesource.com/18488
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/GrContext.cpp b/src/gpu/GrContext.cpp
index af335df..98abc22 100644
--- a/src/gpu/GrContext.cpp
+++ b/src/gpu/GrContext.cpp
@@ -106,8 +106,7 @@
     GrPathRendererChain::Options prcOptions;
     prcOptions.fAllowPathMaskCaching = options.fAllowPathMaskCaching;
     prcOptions.fGpuPathRenderers = options.fGpuPathRenderers;
-    fDrawingManager.reset(new GrDrawingManager(this, prcOptions,
-                                               options.fImmediateMode, &fSingleOwner));
+    fDrawingManager.reset(new GrDrawingManager(this, prcOptions, &fSingleOwner));
 
     fAtlasGlyphCache = new GrAtlasGlyphCache(this, options.fGlyphCacheTextureMaximumBytes);