Inline noop willFoo/didFoo into SkCanvas.h.

include/core/SkCanvas.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkCanvas_DEFINED
 #define SkCanvas_DEFINED
 
@@ skipping 1208 matching lines @@
     virtual const void* onPeekPixels(SkImageInfo*, size_t* rowBytes);
     virtual void* onAccessTopLayerPixels(SkImageInfo*, size_t* rowBytes);
 
     // Subclass save/restore notifiers.
     // Overriders should call the corresponding INHERITED method up the inheritance chain.
     // willSaveLayer()'s return value may suppress full layer allocation.
     enum SaveLayerStrategy {
         kFullLayer_SaveLayerStrategy,
         kNoLayer_SaveLayerStrategy
     };
-    virtual void willSave(SaveFlags);
-    virtual SaveLayerStrategy willSaveLayer(const SkRect*, const SkPaint*, SaveFlags);
-    virtual void willRestore();
 
-    virtual void didConcat(const SkMatrix&);
-    virtual void didSetMatrix(const SkMatrix&);
+    virtual void willSave(SaveFlags) {}
+    virtual SaveLayerStrategy willSaveLayer(const SkRect*, const SkPaint*, SaveFlags) {
+        return kFullLayer_SaveLayerStrategy;
+    }
+    virtual void willRestore() {}
+    virtual void didConcat(const SkMatrix&) {}
+    virtual void didSetMatrix(const SkMatrix&) {}
 
     virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&);
 
     virtual void onDrawText(const void* text, size_t byteLength, SkScalar x,
                             SkScalar y, const SkPaint& paint);
 
     virtual void onDrawPosText(const void* text, size_t byteLength,
                                const SkPoint pos[], const SkPaint& paint);
 
     virtual void onDrawPosTextH(const void* text, size_t byteLength,
@@ skipping 253 matching lines @@
     bool asROBitmap(SkBitmap*) const;
 
 private:
     SkBitmap    fBitmap;    // used if peekPixels() fails
     const void* fAddr;      // NULL on failure
     SkImageInfo fInfo;
     size_t      fRowBytes;
 };
 
 #endif