Fix uninitialized values in bench_pictures' tiled renderer.
Review URL: https://codereview.appspot.com/6506049

git-svn-id: http://skia.googlecode.com/svn/trunk@5333 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tools/PictureRenderer.cpp b/tools/PictureRenderer.cpp
index b162abc..b7958e2 100644
--- a/tools/PictureRenderer.cpp
+++ b/tools/PictureRenderer.cpp
@@ -157,7 +157,10 @@
 
 TiledPictureRenderer::TiledPictureRenderer()
     : fTileWidth(kDefaultTileWidth)
-    , fTileHeight(kDefaultTileHeight) {}
+    , fTileHeight(kDefaultTileHeight)
+    , fTileMinPowerOf2Width(0)
+    , fTileHeightPercentage(0.0)
+    , fTileWidthPercentage(0.0) {}
 
 void TiledPictureRenderer::init(SkPicture* pict) {
     SkASSERT(pict != NULL);