Start canonicalizing color for all A8 textblobs

tools/sk_tool_utils.cpp

Index: tools/sk_tool_utils.cpp
diff --git a/tools/sk_tool_utils.cpp b/tools/sk_tool_utils.cpp
index c3e574a08e3f63b7adede0ce1f6cf4e3112c9179..1a88086a41eaa42ffb6b1540f27162ab2e52e034 100644
--- a/tools/sk_tool_utils.cpp
+++ b/tools/sk_tool_utils.cpp
@@ -12,6 +12,7 @@
 #include "SkCanvas.h"
 #include "SkShader.h"
 #include "SkTestScalerContext.h"
+#include "SkTextBlob.h"
 
 DEFINE_bool(portableFonts, false, "Use portable fonts");
 DEFINE_bool(resourceFonts, false, "Use resource fonts");
@@ -77,4 +78,20 @@ void draw_checkerboard(SkCanvas* canvas, SkColor c1, SkColor c2, int size) {
     canvas->drawPaint(paint);
 }
 
+void add_to_text_blob(SkTextBlobBuilder* builder, const char* text, const SkPaint& origPaint,
+                      SkScalar x, SkScalar y) {
+    SkPaint paint(origPaint);
+    SkTDArray<uint16_t> glyphs;
+
+    size_t len = strlen(text);
+    glyphs.append(paint.textToGlyphs(text, len, NULL));
+    paint.textToGlyphs(text, len, glyphs.begin());
+
+    paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
+    const SkTextBlobBuilder::RunBuffer& run = builder->allocRun(paint, glyphs.count(), x, y,
+                                                                NULL);
+    memcpy(run.glyphs, glyphs.begin(), glyphs.count() * sizeof(uint16_t));
+}
+
+
 }  // namespace sk_tool_utils