De-virtualize SkCanvas matrix ops.

This moves the matrix management logic into non-virtual SkCanvas
methods, and turns the virtuals into protected notifiers.

R=reed@google.com, robertphillips@google.com, bsalomon@google.com
BUG=skia:2297

Author: fmalita@chromium.org

Review URL: https://codereview.chromium.org/195793012

git-svn-id: http://skia.googlecode.com/svn/trunk@13799 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/utils/SkProxyCanvas.cpp b/src/utils/SkProxyCanvas.cpp
index a32819d..037ddd0 100644
--- a/src/utils/SkProxyCanvas.cpp
+++ b/src/utils/SkProxyCanvas.cpp
@@ -39,28 +39,34 @@
     this->INHERITED::willRestore();
 }
 
-bool SkProxyCanvas::translate(SkScalar dx, SkScalar dy) {
-    return fProxy->translate(dx, dy);
+void SkProxyCanvas::didTranslate(SkScalar dx, SkScalar dy) {
+    fProxy->translate(dx, dy);
+    this->INHERITED::didTranslate(dx, dy);
 }
 
-bool SkProxyCanvas::scale(SkScalar sx, SkScalar sy) {
-    return fProxy->scale(sx, sy);
+void SkProxyCanvas::didScale(SkScalar sx, SkScalar sy) {
+    fProxy->scale(sx, sy);
+    this->INHERITED::didScale(sx, sy);
 }
 
-bool SkProxyCanvas::rotate(SkScalar degrees) {
-    return fProxy->rotate(degrees);
+void SkProxyCanvas::didRotate(SkScalar degrees) {
+    fProxy->rotate(degrees);
+    this->INHERITED::didRotate(degrees);
 }
 
-bool SkProxyCanvas::skew(SkScalar sx, SkScalar sy) {
-    return fProxy->skew(sx, sy);
+void SkProxyCanvas::didSkew(SkScalar sx, SkScalar sy) {
+    fProxy->skew(sx, sy);
+    this->INHERITED::didSkew(sx, sy);
 }
 
-bool SkProxyCanvas::concat(const SkMatrix& matrix) {
-    return fProxy->concat(matrix);
+void SkProxyCanvas::didConcat(const SkMatrix& matrix) {
+    fProxy->concat(matrix);
+    this->INHERITED::didConcat(matrix);
 }
 
-void SkProxyCanvas::setMatrix(const SkMatrix& matrix) {
+void SkProxyCanvas::didSetMatrix(const SkMatrix& matrix) {
     fProxy->setMatrix(matrix);
+    this->INHERITED::didSetMatrix(matrix);
 }
 
 void SkProxyCanvas::onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle edgeStyle) {