Remove internal calls to SkImage::getTexture

src/image/SkSurface_Gpu.cpp

Index: src/image/SkSurface_Gpu.cpp
diff --git a/src/image/SkSurface_Gpu.cpp b/src/image/SkSurface_Gpu.cpp
index 173a0d81d7135929efd0e8bdde662480b4621671..35c521ca86f224aac4b062acda691ba2c7c9a15f 100644
--- a/src/image/SkSurface_Gpu.cpp
+++ b/src/image/SkSurface_Gpu.cpp
@@ -116,7 +116,7 @@ void SkSurface_Gpu::onCopyOnWrite(ContentChangeMode mode) {
     // image because onCopyOnWrite is only called when there is a cached image.
     SkAutoTUnref<SkImage> image(this->refCachedImage(SkBudgeted::kNo, kNo_ForceUnique));
     SkASSERT(image);
-    if (rt->asTexture() == as_IB(image)->getTexture()) {
+    if (rt->asTexture() == as_IB(image)->peekTexture()) {
         this->fDevice->replaceRenderTarget(SkSurface::kRetain_ContentChangeMode == mode);
         SkTextureImageApplyBudgetedDecision(image);
     } else if (kDiscard_ContentChangeMode == mode) {