Update bench pictures to time image decode & upload costs

https://codereview.chromium.org/117583002/



git-svn-id: http://skia.googlecode.com/svn/trunk@12742 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrTest.cpp b/src/gpu/GrTest.cpp
index 934f089..c434322 100644
--- a/src/gpu/GrTest.cpp
+++ b/src/gpu/GrTest.cpp
@@ -9,6 +9,7 @@
 #include "GrTest.h"
 
 #include "GrGpu.h"
+#include "GrResourceCache.h"
 
 void GrTestTarget::init(GrContext* ctx, GrDrawTarget* target) {
     SkASSERT(!fContext);
@@ -35,3 +36,7 @@
 void GrContext::setMaxTextureSizeOverride(int maxTextureSizeOverride) {
     fMaxTextureSizeOverride = maxTextureSizeOverride;
 }
+
+void GrContext::purgeAllUnlockedResources() {
+    fTextureCache->purgeAllUnlocked();
+}