Start canonicalizing color for all A8 textblobs

src/core/SkTextBlob.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkTextBlob.h"
 
 #include "SkReadBuffer.h"
@@ skipping 29 matching lines @@
             && fSize == other.fSize
             && fScaleX == other.fScaleX
             && fSkewX == other.fSkewX
             && fHinting == other.fHinting
             && fFlags == other.fFlags;
     }
 
     bool operator!=(const RunFont& other) const {
         return !(*this == other);
     }
+
+    uint32_t flags() const { return fFlags; }
+
 private:
     const static uint32_t kFlagsMask =
         SkPaint::kAntiAlias_Flag          |
         SkPaint::kUnderlineText_Flag      |
         SkPaint::kStrikeThruText_Flag     |
         SkPaint::kFakeBoldText_Flag       |
         SkPaint::kLinearText_Flag         |
         SkPaint::kSubpixelText_Flag       |
         SkPaint::kDevKernText_Flag        |
         SkPaint::kLCDRenderText_Flag      |
@@ skipping 276 matching lines @@
     SkASSERT(!this->done());
     return fCurrentRun->positioning();
 }
 
 void SkTextBlob::RunIterator::applyFontToPaint(SkPaint* paint) const {
     SkASSERT(!this->done());
 
     fCurrentRun->font().applyToPaint(paint);
 }
 
+bool SkTextBlob::RunIterator::isLCD() const {
+    return SkToBool(fCurrentRun->font().flags() & SkPaint::kLCDRenderText_Flag);
+}
+
 SkTextBlobBuilder::SkTextBlobBuilder()
     : fStorageSize(0)
     , fStorageUsed(0)
     , fRunCount(0)
     , fDeferredBounds(false)
     , fLastRun(0) {
     fBounds.setEmpty();
 }
 
 SkTextBlobBuilder::~SkTextBlobBuilder() {
@@ skipping 238 matching lines @@
 
     fStorageUsed = 0;
     fStorageSize = 0;
     fRunCount = 0;
     fLastRun = 0;
     fBounds.setEmpty();
 
     return blob;
 }