GrAuditTrail can now be enabled/disabled at runtime

src/gpu/SkGpuDevice.cpp

Index: src/gpu/SkGpuDevice.cpp
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index df5c7a73a11a18b68df092008608db8e6b5b91f0..0b44a4281ae0522c634e4b3a9427eb2206dbcdda 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -1761,13 +1761,6 @@ bool SkGpuDevice::onShouldDisableLCD(const SkPaint& paint) const {
 void SkGpuDevice::flush() {
     ASSERT_SINGLE_OWNER
 
-    // Clear batch debugging output
-    // TODO not exactly sure where this should live
-    if (GR_BATCH_DEBUGGING_OUTPUT) {
-        SkDebugf("%s\n", fContext->getAuditTrail()->toJson().c_str());
-        // TODO This currently crashes because not all ops are accounted for
-        GR_AUDIT_TRAIL_RESET(fContext->getAuditTrail());
-    }
     fRenderTarget->prepareForExternalIO();
 }