Remove DrawingMgr shims from GrContext

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 "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.
+//
+// It allocates a new GrDrawContext for each GrRenderTarget
+// but all of them still land in the same GrDrawTarget!
+//
+// In the future this class will allocate a new GrDrawContext for
+// each GrRenderTarget/GrDrawTarget and manage the DAG.
+class GrDrawingManager {
+public:
+    ~GrDrawingManager();
+
+    bool abandoned() const { return fAbandoned; }
+
+    GrDrawContext* drawContext(GrRenderTarget* rt, const SkSurfaceProps* surfaceProps);
+
+    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)
+        : fContext(context)
+        , fAbandoned(false)
+        , 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;
+
+    bool              fAbandoned;
+    SkTDArray<GrDrawTarget*> fDrawTargets;
+
+    GrTextContext*    fNVPRTextContext;
+    GrTextContext*    fTextContexts[kNumPixelGeometries][kNumDFTOptions];
+};
+
+#endif