Reland of Make draw* lines responsible for cache management

src/gpu/text/GrAtlasTextBlob.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 GrAtlasTextBlob_DEFINED
 #define GrAtlasTextBlob_DEFINED
 
@@ skipping 272 matching lines @@
 
     void push_back_run(int currRun) {
         SkASSERT(currRun < fRunCount);
         if (currRun > 0) {
             Run::SubRunInfo& newRun = fRuns[currRun].fSubRunInfo.back();
             Run::SubRunInfo& lastRun = fRuns[currRun - 1].fSubRunInfo.back();
             newRun.setAsSuccessor(lastRun);
         }
     }
 
+    SkGlyphCache* setupCache(int runIndex,
+                             const SkSurfaceProps& props,
+                             const SkPaint& skPaint,
+                             const SkMatrix* viewMatrix,
+                             bool noGamma);
+
     // Appends a glyph to the blob.  If the glyph is too large, the glyph will be appended
     // as a path.
     void appendGlyph(int runIndex,
                      const SkRect& positions,
                      GrColor color,
                      GrBatchTextStrike* strike,
                      GrGlyph* glyph,
                      GrFontScaler* scaler, const SkGlyph& skGlyph,
                      SkScalar x, SkScalar y, SkScalar scale, bool applyVM);
 
@@ skipping 76 matching lines @@
     void flushRunAsPaths(GrContext* context,
                          GrDrawContext* dc,
                          const SkSurfaceProps& props,
                          const SkTextBlobRunIterator& it,
                          const GrClip& clip, const SkPaint& skPaint,
                          SkDrawFilter* drawFilter, const SkMatrix& viewMatrix,
                          const SkIRect& clipBounds, SkScalar x, SkScalar y);
 };
 
 #endif