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/TextBench.cpp b/bench/TextBench.cpp
index ee5d5e0db3..cc9537a22b 100644
--- a/bench/TextBench.cpp
+++ b/bench/TextBench.cpp
@@ -69,7 +69,7 @@ public:
     }
 
 protected:
-    void onPreDraw() override {
+    void onDelayedSetup() override {
         if (fDoColorEmoji) {
             SkASSERT(kBW == fFQ);
             fColorEmojiTypeface.reset(GetResourceAsTypeface("/fonts/Funkster.ttf"));