change SkDrawFilter::filter to return a bool, where false means don't-draw

Review URL: https://codereview.appspot.com/6851111

git-svn-id: http://skia.googlecode.com/svn/trunk@6551 2bbb7eff-a529-9590-31e7-b0007b416f81

2 files changed, 4 insertions, 2 deletions

diff --git a/samplecode/SampleApp.cpp b/samplecode/SampleApp.cpp
index c94a772edf..0943d774f0 100644
--- a/samplecode/SampleApp.cpp
+++ b/samplecode/SampleApp.cpp
@@ -491,7 +491,7 @@ public:
                     SkOSMenu::TriState hinting) :
         fLCDState(lcd), fAAState(aa), fFilterState(filter), fHintingState(hinting) {}
 
-    virtual void filter(SkPaint* paint, Type t) {
+    virtual bool filter(SkPaint* paint, Type t) {
         if (kText_Type == t && SkOSMenu::kMixedState != fLCDState) {
             paint->setLCDRenderText(SkOSMenu::kOnState == fLCDState);
         }
@@ -506,6 +506,7 @@ public:
                               SkPaint::kNormal_Hinting :
                               SkPaint::kSlight_Hinting);
         }
+        return true;
     }
 
 private:
diff --git a/samplecode/SampleLayers.cpp b/samplecode/SampleLayers.cpp
index 6d57c2a59e..cf6b0090f4 100644
--- a/samplecode/SampleLayers.cpp
+++ b/samplecode/SampleLayers.cpp
@@ -125,11 +125,12 @@ static void test_fade(SkCanvas* canvas) {
 
 class RedFilter : public SkDrawFilter {
 public:
-    virtual void filter(SkPaint* p, SkDrawFilter::Type) SK_OVERRIDE {
+    virtual bool filter(SkPaint* p, SkDrawFilter::Type) SK_OVERRIDE {
         fColor = p->getColor();
         if (fColor == SK_ColorRED) {
             p->setColor(SK_ColorGREEN);
         }
+        return true;
     }
 
 private: