still trying to kill setDevice: rename to setRootDevice (better name) and make private

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 d46d8bc74b0fe748432c8d7249e1f9c6a1ce8327..746bb066534699ce7639e7a47a90208af63a00ce 100644
--- a/src/image/SkSurface_Gpu.cpp
+++ b/src/image/SkSurface_Gpu.cpp
@@ -83,7 +83,7 @@ void SkSurface_Gpu::onCopyOnWrite(ContentChangeMode mode) {
         }
         SkASSERT(NULL != this->getCachedCanvas());
         SkASSERT(this->getCachedCanvas()->getDevice() == fDevice);
-        this->getCachedCanvas()->setDevice(newDevice);
+        this->getCachedCanvas()->setRootDevice(newDevice);
         SkRefCnt_SafeAssign(fDevice, newDevice.get());
     }
 }