Fix ref cnt'ing issue in GrProgramElement.

Drop ref on GrGpuResources when GrProgramElement loses its last ref and already has a pending execution.

BUG=skia:2889

Review URL: https://codereview.chromium.org/612293003

1 files changed, 7 insertions, 3 deletions

diff --git a/src/gpu/GrProgramElement.cpp b/src/gpu/GrProgramElement.cpp
index 2c3085f7e4..89d53e28db 100644
--- a/src/gpu/GrProgramElement.cpp
+++ b/src/gpu/GrProgramElement.cpp
@@ -31,9 +31,7 @@ void GrProgramElement::convertRefToPendingExecution() const {
     ++fPendingExecutions;
     this->unref();
     if (0 == fRefCnt) {
-        for (int i = 0; i < fGpuResources.count(); ++i) {
-            fGpuResources[i]->removeRef();
-        }
+        this->removeRefs();
     }
 }
 
@@ -53,3 +51,9 @@ void GrProgramElement::completedExecution() const {
         }
     }
 }
+
+void GrProgramElement::removeRefs() const {
+    for (int i = 0; i < fGpuResources.count(); ++i) {
+        fGpuResources[i]->removeRef();
+    }
+}