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/PicturePlaybackBench.cpp b/bench/PicturePlaybackBench.cpp
index 04eddc4f4f..6c42a69e4b 100644
--- a/bench/PicturePlaybackBench.cpp
+++ b/bench/PicturePlaybackBench.cpp
@@ -162,7 +162,7 @@ public:
     const char* onGetName() override { return fName.c_str(); }
     SkIPoint onGetSize() override { return SkIPoint::Make(1024,1024); }
 
-    void onPreDraw() override {
+    void onDelayedSetup() override {
         SkAutoTDelete<SkBBHFactory> factory;
         switch (fBBH) {
             case kNone:                                                 break;