Add Histogram Macros to Skia

src/gpu/SkGpuDevice_drawTexture.cpp

 /*
  * 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 "SkGpuDevice.h"
 
 #include "GrBlurUtils.h"
@@ skipping 76 matching lines @@
 
 //////////////////////////////////////////////////////////////////////////////
 
 void SkGpuDevice::drawTextureProducer(GrTextureProducer* producer,
                                       const SkRect* srcRect,
                                       const SkRect* dstRect,
                                       SkCanvas::SrcRectConstraint constraint,
                                       const SkMatrix& viewMatrix,
                                       const GrClip& clip,
                                       const SkPaint& paint) {
+    // This is the funnel for all non-tiled bitmap/image draw calls. Log a histogram entry.
+    SK_HISTOGRAM_BOOLEAN("DrawTiled", false);
+
     // Figure out the actual dst and src rect by clipping the src rect to the bounds of the
     // adjuster. If the src rect is clipped then the dst rect must be recomputed. Also determine
     // the matrix that maps the src rect to the dst rect.
     SkRect clippedSrcRect;
     SkRect clippedDstRect;
     const SkRect srcBounds = SkRect::MakeIWH(producer->width(), producer->height());
     SkMatrix srcToDstMatrix;
     if (srcRect) {
         if (!dstRect) {
             dstRect = &srcBounds;
@@ skipping 123 matching lines @@
                                       rrect)) {
         return;
     }
     SkPath rectPath;
     rectPath.addRect(clippedDstRect);
     rectPath.setIsVolatile(true);
     GrBlurUtils::drawPathWithMaskFilter(this->context(), fDrawContext, fClip,
                                         rectPath, &grPaint, viewMatrix, mf, paint.getPathEffect(),
                                         GrStrokeInfo::FillInfo(), true);
 }