Add before and after command count to filter tool

tools/filtermain.cpp

Index: tools/filtermain.cpp
===================================================================
--- tools/filtermain.cpp	(revision 8488)
+++ tools/filtermain.cpp	(working copy)
@@ -21,7 +21,7 @@
 static void usage() {
     SkDebugf("Usage: filter -i inFile [-o outFile] [--input-dir path] [--output-dir path]\n");
     SkDebugf("                        [-h|--help]\n\n");
-    SkDebugf("    -i inFile  : file to file.\n");
+    SkDebugf("    -i inFile  : file to filter.\n");
     SkDebugf("    -o outFile : result of filtering.\n");
     SkDebugf("    --input-dir : process all files in dir with .skp extension.\n");
     SkDebugf("    --output-dir : results of filtering the input dir.\n");
@@ -654,6 +654,7 @@
     }
 
     bool changed = true;
+    int numBefore = debugCanvas.getSize();
 
     while (changed) {
         changed = false;
@@ -677,6 +678,8 @@
         }
     }
 
+    int numAfter = debugCanvas.getSize();
+
     if (!outFile.isEmpty()) {
         SkPicture outPicture;
 
@@ -700,7 +703,8 @@
     if (!someOptFired) {
         SkDebugf("No opts fired\n");
     } else {
-        SkDebugf("\n");
+        SkDebugf("\t before: %d after: %d delta: %d\n", 
+                 numBefore, numAfter, numBefore-numAfter);
     }
 
     return 0;