Move all text stuff to its own folder

src/gpu/GrAtlasTextContext.h

Index: src/gpu/GrAtlasTextContext.h
diff --git a/src/gpu/GrAtlasTextContext.h b/src/gpu/GrAtlasTextContext.h
deleted file mode 100644
index 47f05404ded9eaa44a7707dcbad6f9b1fc271318..0000000000000000000000000000000000000000
--- a/src/gpu/GrAtlasTextContext.h
+++ /dev/null
@@ -1,131 +0,0 @@
-/*
- * 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 GrAtlasTextContext_DEFINED
-#define GrAtlasTextContext_DEFINED
-
-#include "GrTextContext.h"
-
-#include "GrAtlasTextBlob.h"
-#include "GrDistanceFieldAdjustTable.h"
-#include "GrGeometryProcessor.h"
-#include "SkTextBlobRunIterator.h"
-
-#ifdef GR_TEST_UTILS
-#include "GrBatchTest.h"
-#endif
-
-class GrDrawBatch;
-class GrDrawContext;
-class GrDrawTarget;
-class GrPipelineBuilder;
-class GrTextBlobCache;
-class SkGlyph;
-
-/*
- * This class implements GrTextContext using standard bitmap fonts, and can also process textblobs.
- */
-class GrAtlasTextContext : public GrTextContext {
-public:
-    static GrAtlasTextContext* Create(GrContext*, const SkSurfaceProps&);
-
-private:
-    GrAtlasTextContext(GrContext*, const SkSurfaceProps&);
-    ~GrAtlasTextContext() override {}
-
-    bool canDraw(const SkPaint&, const SkMatrix& viewMatrix) override;
-
-    void onDrawText(GrDrawContext*, const GrClip&, const GrPaint&, const SkPaint&,
-                    const SkMatrix& viewMatrix, const char text[], size_t byteLength,
-                    SkScalar x, SkScalar y, const SkIRect& regionClipBounds) override;
-    void onDrawPosText(GrDrawContext*, const GrClip&, const GrPaint&,
-                       const SkPaint&, const SkMatrix& viewMatrix,
-                       const char text[], size_t byteLength,
-                       const SkScalar pos[], int scalarsPerPosition,
-                       const SkPoint& offset, const SkIRect& regionClipBounds) override;
-    void drawTextBlob(GrDrawContext*, const GrClip&, const SkPaint&,
-                      const SkMatrix& viewMatrix, const SkTextBlob*, SkScalar x, SkScalar y,
-                      SkDrawFilter*, const SkIRect& clipBounds) override;
-
-    typedef GrAtlasTextBlob::Run Run;
-    typedef Run::SubRunInfo PerSubRunInfo;
-
-    inline bool canDrawAsDistanceFields(const SkPaint&, const SkMatrix& viewMatrix);
-    GrAtlasTextBlob* setupDFBlob(int glyphCount, const SkPaint& origPaint,
-                                 const SkMatrix& viewMatrix, SkPaint* dfPaint, 
-                                 SkScalar* textRatio);
-    void bmpAppendGlyph(GrAtlasTextBlob*, int runIndex, const SkGlyph&, int left, int top,
-                        GrColor color, GrFontScaler*);
-    bool dfAppendGlyph(GrAtlasTextBlob*, int runIndex, const SkGlyph&, SkScalar sx, SkScalar sy,
-                       GrColor color, GrFontScaler*, SkScalar textRatio,
-                       const SkMatrix& viewMatrix);
-
-    // A helper for drawing BitmapText in a run of distance fields
-    inline void fallbackDrawPosText(GrAtlasTextBlob*, int runIndex,
-                                    const GrClip&, GrColor color,
-                                    const SkPaint&, const SkMatrix& viewMatrix,
-                                    const SkTDArray<char>& fallbackTxt,
-                                    const SkTDArray<SkScalar>& fallbackPos,
-                                    int scalarsPerPosition,
-                                    const SkPoint& offset);
-
-    void internalDrawDFText(GrAtlasTextBlob*, int runIndex, const SkPaint&,
-                            GrColor color, const SkMatrix& viewMatrix,
-                            const char text[], size_t byteLength,
-                            SkScalar x, SkScalar y,
-                            SkScalar textRatio,
-                            SkTDArray<char>* fallbackTxt,
-                            SkTDArray<SkScalar>* fallbackPos,
-                            SkPoint* offset, const SkPaint& origPaint);
-    void internalDrawDFPosText(GrAtlasTextBlob*, int runIndex, const SkPaint&,
-                               GrColor color, const SkMatrix& viewMatrix,
-                               const char text[], size_t byteLength,
-                               const SkScalar pos[], int scalarsPerPosition,
-                               const SkPoint& offset,
-                               SkScalar textRatio,
-                               SkTDArray<char>* fallbackTxt,
-                               SkTDArray<SkScalar>* fallbackPos);
-
-    // sets up the descriptor on the blob and returns a detached cache.  Client must attach
-    inline static GrColor ComputeCanonicalColor(const SkPaint&, bool lcd);
-    inline SkGlyphCache* setupCache(Run*, const SkPaint&, const SkMatrix* viewMatrix, bool noGamma);
-    void regenerateTextBlob(GrAtlasTextBlob* bmp, const SkPaint& skPaint, GrColor,
-                            const SkMatrix& viewMatrix,
-                            const SkTextBlob* blob, SkScalar x, SkScalar y,
-                            SkDrawFilter* drawFilter,
-                            const GrClip&);
-    inline static bool HasLCD(const SkTextBlob*);
-    inline void initDistanceFieldPaint(GrAtlasTextBlob*, SkPaint*, SkScalar* textRatio,
-                                       const SkMatrix&);
-
-    // Test methods
-    // TODO this is really ugly.  It'd be much nicer if positioning could be moved to batch
-    inline GrAtlasTextBlob* createDrawTextBlob(const GrClip&, const GrPaint&,
-                                               const SkPaint&, const SkMatrix& viewMatrix,
-                                               const char text[], size_t byteLength,
-                                               SkScalar x, SkScalar y,
-                                               const SkIRect& regionClipBounds);
-    inline GrAtlasTextBlob* createDrawPosTextBlob(const GrClip&, const GrPaint&,
-                                                  const SkPaint&, const SkMatrix& viewMatrix,
-                                                  const char text[], size_t byteLength,
-                                                  const SkScalar pos[], int scalarsPerPosition,
-                                                  const SkPoint& offset,
-                                                  const SkIRect& regionClipBounds);
-    const GrDistanceFieldAdjustTable* dfAdjustTable() const { return fDistanceAdjustTable; }
-
-    GrBatchTextStrike* fCurrStrike;
-    GrTextBlobCache* fCache;
-    SkAutoTUnref<const GrDistanceFieldAdjustTable> fDistanceAdjustTable;
-
-#ifdef GR_TEST_UTILS
-    DRAW_BATCH_TEST_FRIEND(TextBlobBatch);
-#endif
-
-    typedef GrTextContext INHERITED;
-};
-
-#endif