Move all text stuff to its own folder

src/gpu/GrTextBlobCache.cpp

Index: src/gpu/GrTextBlobCache.cpp
diff --git a/src/gpu/GrTextBlobCache.cpp b/src/gpu/GrTextBlobCache.cpp
deleted file mode 100644
index f11b7c60cbd88d62857863e27847d9132c8219a8..0000000000000000000000000000000000000000
--- a/src/gpu/GrTextBlobCache.cpp
+++ /dev/null
@@ -1,58 +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.
- */
-
-#include "GrTextBlobCache.h"
-
-static const int kVerticesPerGlyph = 4;
-
-GrTextBlobCache::~GrTextBlobCache() {
-    this->freeAll();
-}
-
-GrAtlasTextBlob* GrTextBlobCache::createBlob(int glyphCount, int runCount, size_t maxVASize) {
-    // We allocate size for the GrAtlasTextBlob itself, plus size for the vertices array,
-    // and size for the glyphIds array.
-    size_t verticesCount = glyphCount * kVerticesPerGlyph * maxVASize;
-    size_t size = sizeof(GrAtlasTextBlob) +
-                  verticesCount +
-                  glyphCount * sizeof(GrGlyph**) +
-                  sizeof(GrAtlasTextBlob::Run) * runCount;
-
-    void* allocation = fPool.allocate(size);
-#ifdef CACHE_SANITY_CHECK
-    sk_bzero(allocation, size);
-#endif
-
-    GrAtlasTextBlob* cacheBlob = new (allocation) GrAtlasTextBlob;
-#ifdef CACHE_SANITY_CHECK
-    cacheBlob->fSize = size;
-#endif
-
-    // setup offsets for vertices / glyphs
-    cacheBlob->fVertices = sizeof(GrAtlasTextBlob) + reinterpret_cast<unsigned char*>(cacheBlob);
-    cacheBlob->fGlyphs = reinterpret_cast<GrGlyph**>(cacheBlob->fVertices + verticesCount);
-    cacheBlob->fRuns = reinterpret_cast<GrAtlasTextBlob::Run*>(cacheBlob->fGlyphs + glyphCount);
-
-    // Initialize runs
-    for (int i = 0; i < runCount; i++) {
-        new (&cacheBlob->fRuns[i]) GrAtlasTextBlob::Run;
-    }
-    cacheBlob->fRunCount = runCount;
-    cacheBlob->fPool = &fPool;
-    return cacheBlob;
-}
-
-void GrTextBlobCache::freeAll() {
-    SkTDynamicHash<GrAtlasTextBlob, GrAtlasTextBlob::Key>::Iter iter(&fCache);
-    while (!iter.done()) {
-        GrAtlasTextBlob* blob = &(*iter);
-        fBlobList.remove(blob);
-        blob->unref();
-        ++iter;
-    }
-    fCache.rewind();
-}