Add fallback code for TextContexts that don't support all features

src/gpu/GrBitmapTextContext.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrBitmapTextContext.h"
 #include "GrAtlas.h"
 #include "GrDrawTarget.h"
 #include "GrFontScaler.h"
 #include "GrIndexBuffer.h"
 #include "GrTextStrike.h"
 #include "GrTextStrike_impl.h"
 #include "SkColorPriv.h"
 #include "SkPath.h"
 #include "SkRTConf.h"
 #include "SkStrokeRec.h"
 #include "effects/GrCustomCoordsTextureEffect.h"
 
 #include "SkAutoKern.h"
+#include "SkDraw.h"
 #include "SkGlyphCache.h"
 #include "SkGpuDevice.h"
 #include "SkGr.h"
 
 static const int kGlyphCoordsAttributeIndex = 1;
 
 SK_CONF_DECLARE(bool, c_DumpFontCache, "gpu.dumpFontCache", false,
                 "Dump the contents of the font cache before every purge.");
 
+bool GrBitmapTextContext::CanDraw(const SkPaint& paint, const SkMatrix& ctm) {
+    return !SkDraw::ShouldDrawTextAsPaths(paint, ctm);
+}
+
 GrBitmapTextContext::GrBitmapTextContext(GrContext* context,
                                          const GrPaint& grPaint,
                                          const SkPaint& skPaint,
                                          const SkDeviceProperties& properties)
                                        : GrTextContext(context, grPaint, skPaint, properties) {
     fStrike = NULL;
 
     fCurrTexture = NULL;
     fCurrVertex = 0;
 
@@ skipping 549 matching lines @@
                                         SkFixedToFloat(vx + width),
                                         SkFixedToFloat(vy + height),
                                         2 * sizeof(SkPoint));
     fVertices[2*fCurrVertex+1].setRectFan(SkFixedToFloat(texture->normalizeFixedX(tx)),
                                           SkFixedToFloat(texture->normalizeFixedY(ty)),
                                           SkFixedToFloat(texture->normalizeFixedX(tx + width)),
                                           SkFixedToFloat(texture->normalizeFixedY(ty + height)),
                                           2 * sizeof(SkPoint));
     fCurrVertex += 4;
 }