Remove SkRecorder's kWriteOnly mode.

I'm soon going to have SkRecorder start calling getTotalMatrix(), which
would be broken in write-only mode.  That change is big and nebulous,
but it's clear kWriteOnly needs to go, so we might as well kill it now.

My notes in bench_playback about kWriteOnly mode being important were
probably overly cautious.  I now think this is a fair enough comparison
even re-recording into a read-write canvas.

BUG=skia:2378
R=fmalita@chromium.org, mtklein@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/290653004

git-svn-id: http://skia.googlecode.com/svn/trunk@14963 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tests/RecorderTest.cpp b/tests/RecorderTest.cpp
index 8fa198c..c1d9638 100644
--- a/tests/RecorderTest.cpp
+++ b/tests/RecorderTest.cpp
@@ -40,7 +40,7 @@
 
 DEF_TEST(Recorder, r) {
     SkRecord record;
-    SkRecorder recorder(SkRecorder::kWriteOnly_Mode, &record, 1920, 1080);
+    SkRecorder recorder(&record, 1920, 1080);
 
     recorder.drawRect(SkRect::MakeWH(10, 10), SkPaint());
 
@@ -62,7 +62,7 @@
     REPORTER_ASSERT(r, paint.getShader()->unique());
     {
         SkRecord record;
-        SkRecorder recorder(SkRecorder::kWriteOnly_Mode, &record, 1920, 1080);
+        SkRecorder recorder(&record, 1920, 1080);
         recorder.saveLayer(&bounds, &paint);
         REPORTER_ASSERT(r, !paint.getShader()->unique());
     }