AnalysisCanvas drawTextBlob() override.

AnalysisCanvas should be notified when drawing text using the new blob
API.

R=jbroman@chromium.org,reed@google.com,reveman@chromium.org
BUG=412445

Review URL: https://codereview.chromium.org/545203004

Cr-Commit-Position: refs/heads/master@{#294389}

skia/ext/analysis_canvas.cc

@@ -267,6 +267,15 @@ void AnalysisCanvas::onDrawTextOnPath(const void* text,
   ++draw_op_count_;
 }
 
+void AnalysisCanvas::onDrawTextBlob(const SkTextBlob* blob,
+                                    SkScalar x,
+                                    SkScalar y,
+                                    const SkPaint &paint) {
+  is_solid_color_ = false;
+  is_transparent_ = false;
+  ++draw_op_count_;
+}
+
 void AnalysisCanvas::onDrawDRRect(const SkRRect& outer,
                                   const SkRRect& inner,
                                   const SkPaint& paint) {

skia/ext/analysis_canvas.h

@@ -106,6 +106,10 @@ class SK_API AnalysisCanvas : public SkCanvas, public SkDrawPictureCallback {
                                 const SkPath& path,
                                 const SkMatrix* matrix,
                                 const SkPaint&) OVERRIDE;
+  virtual void onDrawTextBlob(const SkTextBlob* blob,
+                              SkScalar x,
+                              SkScalar y,
+                              const SkPaint& paint) OVERRIDE;
   virtual void onDrawDRRect(const SkRRect& outer,
                             const SkRRect& inner,
                             const SkPaint&) OVERRIDE;