Add immediate mode option for gpu configs in dm

src/gpu/GrDrawingManager.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrDrawingManager_DEFINED
 #define GrDrawingManager_DEFINED
 
+#include "GrDrawTarget.h"
 #include "SkTDArray.h"
 
 class GrContext;
 class GrDrawContext;
 class GrTextContext;
 
 // Currently the DrawingManager creates a separate GrTextContext for each
 // combination of text drawing options (pixel geometry x DFT use)
 // and hands the appropriate one back given the DrawContext's request.
 //
@@ skipping 12 matching lines @@
 
     GrTextContext* textContext(const SkSurfaceProps& props, GrRenderTarget* rt);
 
     // The caller automatically gets a ref on the returned drawTarget. It must 
     // be balanced by an unref call.
     GrDrawTarget* newDrawTarget(GrRenderTarget* rt);
 
     GrContext* getContext() { return fContext; }
 
 private:
-    GrDrawingManager(GrContext* context)
+    GrDrawingManager(GrContext* context, GrDrawTarget::Options options)
         : fContext(context)
         , fAbandoned(false)
+        , fOptions(options)
         , fNVPRTextContext(nullptr) {
         sk_bzero(fTextContexts, sizeof(fTextContexts));
     }
 
     void abandon();
     void cleanup();
     void reset();
     void flush();
 
     friend class GrContext;  // for access to: ctor, abandon, reset & flush
 
     static const int kNumPixelGeometries = 5; // The different pixel geometries
     static const int kNumDFTOptions = 2;      // DFT or no DFT
 
-    GrContext*        fContext;
+    GrContext*                  fContext;
 
-    bool              fAbandoned;
-    SkTDArray<GrDrawTarget*> fDrawTargets;
+    bool                        fAbandoned;
+    SkTDArray<GrDrawTarget*>    fDrawTargets;
+    GrDrawTarget::Options       fOptions;
 
-    GrTextContext*    fNVPRTextContext;
-    GrTextContext*    fTextContexts[kNumPixelGeometries][kNumDFTOptions];
+    GrTextContext*              fNVPRTextContext;
+    GrTextContext*              fTextContexts[kNumPixelGeometries][kNumDFTOptions];
 };
 
 #endif