Proposed SkCanvas API for preLoading textures to VRAM

src/core/SkCanvas.cpp

Index: src/core/SkCanvas.cpp
===================================================================
--- src/core/SkCanvas.cpp	(revision 13719)
+++ src/core/SkCanvas.cpp	(working copy)
@@ -1065,6 +1065,13 @@
     // do nothing. Subclasses may do something
 }
 
+void SkCanvas::internalPrivate_PreLoad(const SkBitmap& bitmap, const SkIRect& rect) {
+    SkBaseDevice* device = this->getDevice();
+    if (NULL != device) {
+        device->internalPrivate_PreLoad(bitmap, rect);
+    }
+}
+
 /////////////////////////////////////////////////////////////////////////////
 
 void SkCanvas::internalDrawBitmap(const SkBitmap& bitmap,