Try out scalar picture sizes

This paves the way for removing the 'fTile' parameter from SkPictureShader (although that should be a different CL). If we like this we could also move to providing an entire cull SkRect.

R=reed@google.com, mtklein@google.com, fmalita@google.com, fmalita@chromium.org

Author: robertphillips@google.com

Review URL: https://codereview.chromium.org/513983002
diff --git a/samplecode/SampleFilterFuzz.cpp b/samplecode/SampleFilterFuzz.cpp
index 298219d..8aa48ed 100644
--- a/samplecode/SampleFilterFuzz.cpp
+++ b/samplecode/SampleFilterFuzz.cpp
@@ -371,7 +371,9 @@
     {
         SkRTreeFactory factory;
         SkPictureRecorder recorder;
-        SkCanvas* recordingCanvas = recorder.beginRecording(kBitmapSize, kBitmapSize, &factory, 0);
+        SkCanvas* recordingCanvas = recorder.beginRecording(SkIntToScalar(kBitmapSize), 
+                                                            SkIntToScalar(kBitmapSize), 
+                                                            &factory, 0);
         drawSomething(recordingCanvas);
         SkAutoTUnref<SkPicture> pict(recorder.endRecording());
         filter = SkPictureImageFilter::Create(pict.get(), make_rect());