Switch to the new SkCanvas::willSave() API.

LayoutTests/inspector/layers/layer-canvas-log-expected.txt

Index: LayoutTests/inspector/layers/layer-canvas-log-expected.txt
diff --git a/LayoutTests/inspector/layers/layer-canvas-log-expected.txt b/LayoutTests/inspector/layers/layer-canvas-log-expected.txt
index 47e249c094e1a2a968917b7363084f7c01e5f0b8..7147908335499bb02373c830ff7112966856869a 100644
--- a/LayoutTests/inspector/layers/layer-canvas-log-expected.txt
+++ b/LayoutTests/inspector/layers/layer-canvas-log-expected.txt
@@ -4,7 +4,6 @@ Canvas log:
     0 : {
         method : "save"
         params : {
-            saveFlags : "kMatrix_SaveFlag kClip_SaveFlag "
         }
     }
     1 : {
@@ -149,7 +148,6 @@ Canvas log:
     4 : {
         method : "save"
         params : {
-            saveFlags : "kMatrix_SaveFlag kClip_SaveFlag "
         }
     }
     5 : {
@@ -175,7 +173,6 @@ Canvas log:
     7 : {
         method : "save"
         params : {
-            saveFlags : "kMatrix_SaveFlag kClip_SaveFlag "
         }
     }
     8 : {
@@ -210,7 +207,7 @@ Canvas log:
                 textSize : 12
                 textSkewX : 0
             }
-            saveFlags : "kMatrix_SaveFlag kClip_SaveFlag kHasAlphaLayer_SaveFlag kFullColorLayer_SaveFlag kClipToLayer_SaveFlag "
+            saveFlags : "kHasAlphaLayer_SaveFlag kFullColorLayer_SaveFlag kClipToLayer_SaveFlag "
         }
     }
 }