Fix for nexus 5 crashing in GL benches

GLBenches do not expect gl state  to change between onPerCanvasPreDraw and *PostDraw, but we do a clear and sometimes we clear as draw.  This causes us to bind vertex objects / programs / etc.

This change creates two new virtual methods which are called right before and immediately after timing.

BUG=skia:

Review URL: https://codereview.chromium.org/1379853003

1 files changed, 1 insertions, 1 deletions

diff --git a/bench/BitmapScaleBench.cpp b/bench/BitmapScaleBench.cpp
index 2bfa312989..b3f0763996 100644
--- a/bench/BitmapScaleBench.cpp
+++ b/bench/BitmapScaleBench.cpp
@@ -56,7 +56,7 @@ protected:
         fName.printf( "bitmap_scale_%s_%d_%d", name, fInputSize, fOutputSize );
     }
 
-    void onPreDraw() override {
+    void onDelayedSetup() override {
         fInputBitmap.allocN32Pixels(fInputSize, fInputSize, true);
         fInputBitmap.eraseColor(SK_ColorWHITE);