Add verb field in scraping scripts

tools/lua/gradients.lua

 function sk_scrape_startcanvas(c, fileName) end
 function sk_scrape_endcanvas(c, fileName) end
 
 LuaDoubleNearlyZero = 1.0 / bit32.lshift(1.0, 12)
 
 function LuaDoubleNearlyEqual(a, b)
     return math.abs(a-b) <= LuaDoubleNearlyZero
 end
 
+verbs = {}
 gradients = {}
 
 i = 1
 
 function sk_scrape_accumulate(t)
     local p = t.paint
     if p then
         local s = p:getShader()
         if s then
             local g = s:asAGradient()
             if g then
+                if verbs[t.verb] then
+                    verbs[t.verb] = verbs[t.verb] + 1
+                else
+                    verbs[t.verb] = 1
+                end
+
                 gradients[i] = {}
 
                 gradients[i].colorCount = g.colorCount
                 gradients[i].type       = g.type
                 gradients[i].tile       = g.tile
 
                 isEvenlySpaced = true
                 for j = 1, g.colorCount, 1 do
                     if not LuaDoubleNearlyEqual(g.positions[j], (j-1)/(g.colorCount-1)) then
                         isEvenlySpaced = false
                     end
                 end
                 gradients[i].isEvenlySpaced = isEvenlySpaced
 
                 numHardStops = 0
                 for j = 2, g.colorCount, 1 do
                     if LuaDoubleNearlyEqual(g.positions[j], g.positions[j-1]) then
                         numHardStops = numHardStops + 1
                     end
                 end
-                gradients[i].numHardStops = numHardStops;
+                gradients[i].numHardStops = numHardStops
 
+                gradients[i].verb = t.verb
+                
                 gradients[i].positions = {}
                 for j = 1, g.colorCount, 1 do
                     gradients[i].positions[j] = g.positions[j]
                 end
 
                 i = i + 1
             end
         end
     end
 end
 
 function sk_scrape_summarize()
     for k, v in pairs(gradients) do
         local pos = ""
         for j = 1, v.colorCount , 1 do
             pos = pos .. v.positions[j]
             if j ~= v.colorCount then
                 pos = pos .. ","
             end
         end
 
-        io.write(string.format("%d %s %s %d %d %s\n",
+        io.write(string.format("%d %s %s %d %d %s %s\n",
                                 v.colorCount,
                                 v.type,
                                 v.tile,
                                 tonumber(v.isEvenlySpaced and 1 or 0),
                                 v.numHardStops,
+                                v.verb,
                                 pos))
     end
 end