getDeviceCapabilities is no longer need, so remove it

src/utils/SkDeferredCanvas.cpp

Index: src/utils/SkDeferredCanvas.cpp
diff --git a/src/utils/SkDeferredCanvas.cpp b/src/utils/SkDeferredCanvas.cpp
index 6592c6088447e18bfd328c78cd81210ff281fb89..07bd6acda60bcc2e49b4a438ac089ada470bd3b2 100644
--- a/src/utils/SkDeferredCanvas.cpp
+++ b/src/utils/SkDeferredCanvas.cpp
@@ -157,7 +157,6 @@ public:
     void setMaxRecordingStorage(size_t);
     void recordedDrawCommand();
 
-    virtual uint32_t getDeviceCapabilities() SK_OVERRIDE;
     virtual int width() const SK_OVERRIDE;
     virtual int height() const SK_OVERRIDE;
     virtual SkBitmap::Config config() const SK_OVERRIDE;
@@ -432,10 +431,6 @@ SkImage* SkDeferredDevice::newImageSnapshot() {
     return fSurface ? fSurface->newImageSnapshot() : NULL;
 }
 
-uint32_t SkDeferredDevice::getDeviceCapabilities() {
-    return immediateDevice()->getDeviceCapabilities();
-}
-
 int SkDeferredDevice::width() const {
     return immediateDevice()->width();
 }