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/TextBlobBench.cpp b/bench/TextBlobBench.cpp
index 0ef5eb9654..5f4dbba63d 100644
--- a/bench/TextBlobBench.cpp
+++ b/bench/TextBlobBench.cpp
@@ -29,7 +29,7 @@ public:
     }
 
 protected:
-    void onPreDraw() override {
+    void onDelayedSetup() override {
         fTypeface.reset(sk_tool_utils::create_portable_typeface("serif", SkTypeface::kNormal));
         // make textblob
         SkPaint paint;