Proposed SkCanvas API for preLoading textures to VRAM v2.0

src/core/SkDevice.cpp

Index: src/core/SkDevice.cpp
===================================================================
--- src/core/SkDevice.cpp	(revision 13762)
+++ src/core/SkDevice.cpp	(working copy)
@@ -197,3 +197,12 @@
 #ifdef SK_SUPPORT_LEGACY_WRITEPIXELSCONFIG
 void SkBaseDevice::writePixels(const SkBitmap&, int x, int y, SkCanvas::Config8888) {}
 #endif
+
+void SkBaseDevice::EXPERIMENTAL_optimize(SkPicture* picture) {
+    // The base class doesn't perform any analysis but derived classes may
+}
+
+bool SkBaseDevice::EXPERIMENTAL_drawPicture(const SkPicture& picture) {
+    // The base class doesn't perform any accelerated picture rendering
+    return false;
+}