Improved heuristic for disable acceleration.

third_party/WebKit/Source/modules/canvas2d/BaseRenderingContext2D.h

Index: third_party/WebKit/Source/modules/canvas2d/BaseRenderingContext2D.h
diff --git a/third_party/WebKit/Source/modules/canvas2d/BaseRenderingContext2D.h b/third_party/WebKit/Source/modules/canvas2d/BaseRenderingContext2D.h
index 9638d7ea2b03458bd71b323d627c9d1827e58574..b8bce4e2e7d65e2ec0059008d375584b44fcaa6c 100644
--- a/third_party/WebKit/Source/modules/canvas2d/BaseRenderingContext2D.h
+++ b/third_party/WebKit/Source/modules/canvas2d/BaseRenderingContext2D.h
@@ -165,7 +165,8 @@ public:
     enum DrawCallType {
         StrokePath = 0,
         FillPath,
-        DrawImage,
+        DrawSVGImage,

[Justin Novosad, 2016/08/04 15:53:17]

SVG -> Vector

[sebastienlc, 2016/08/04 16:36:27]

Done.

+        DrawPNGImage,

[Justin Novosad, 2016/08/04 15:53:17]

PNG -> Bitmap

[sebastienlc, 2016/08/04 16:36:27]

Done.

         FillText,
         StrokeText,
         FillRect,
@@ -187,7 +188,9 @@ public:
         double boundingBoxAreaDrawCalls[DrawCallTypeCount];
         double boundingBoxAreaFillType[PathFillTypeCount];
         int numNonConvexFillPathCalls;
-        int numGradients;
+        double nonConvexFillPathArea;

[Justin Novosad, 2016/08/04 15:53:17]

Could you change all these doubles to float.  The additional precision is not
justified, aspecially since the areas are computed from FloatRect, and most of
the canvas API uses float. We'll get rid all the casts to double.

[sebastienlc, 2016/08/04 16:36:27]

Done.

+        int numRadialGradients;
+        int numLinearGradients;
         int numPatterns;
         int numDrawWithComplexClips;
         int numBlurredShadows;