Refactoring: get rid of the SkBenchmark void* parameter.

While I was doing massive sed-ing, I also converted every bench to use DEF_BENCH instead of registering the ugly manual way.

BUG=
R=scroggo@google.com

Review URL: https://codereview.chromium.org/23876006

git-svn-id: http://skia.googlecode.com/svn/trunk@11263 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/bench/WritePixelsBench.cpp b/bench/WritePixelsBench.cpp
index a9b6763..949b5bc 100644
--- a/bench/WritePixelsBench.cpp
+++ b/bench/WritePixelsBench.cpp
@@ -13,9 +13,8 @@
 
 class WritePixelsBench : public SkBenchmark {
 public:
-    WritePixelsBench(void* param, SkCanvas::Config8888 config)
-        : INHERITED(param)
-        , fConfig(config)
+    WritePixelsBench(SkCanvas::Config8888 config)
+        : fConfig(config)
         , fName("writepix") {
         switch (config) {
             case SkCanvas::kNative_Premul_Config8888:
@@ -70,5 +69,5 @@
 
 //////////////////////////////////////////////////////////////////////////////
 
-DEF_BENCH( return SkNEW_ARGS(WritePixelsBench, (p, SkCanvas::kRGBA_Premul_Config8888)); )
-DEF_BENCH( return SkNEW_ARGS(WritePixelsBench, (p, SkCanvas::kRGBA_Unpremul_Config8888)); )
+DEF_BENCH( return SkNEW_ARGS(WritePixelsBench, (SkCanvas::kRGBA_Premul_Config8888)); )
+DEF_BENCH( return SkNEW_ARGS(WritePixelsBench, (SkCanvas::kRGBA_Unpremul_Config8888)); )