Use SkArenaAlloc in the SkAutoBlitterChoose code.

- Added default implementation of onMakeContext to support use in android.

Searches for uses:
"public SkShader"  package:^chromium$ -file:^src/third_party/skia
package:^aosp.* "public SkShader"  -file:external/skia -file:.*third_party/skia
package:^android$ "public SkShader"  -file:external/skia -file:.*third_party/skia

... shows that no subclass overrides onCreateContext.

TBR=reed@google.com
TBR=mtklein@google.com

Change-Id: I8bd5f57a79534574e344b165d31dccee41c31767
Reviewed-on: https://skia-review.googlesource.com/8140
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Herb Derby <herb@google.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/src/core/SkComposeShader.h b/src/core/SkComposeShader.h
index 7f9ff69ca8..be788af2af 100644
--- a/src/core/SkComposeShader.h
+++ b/src/core/SkComposeShader.h
@@ -45,8 +45,6 @@ public:
         ComposeShaderContext(const SkComposeShader&, const ContextRec&,
                              SkShader::Context* contextA, SkShader::Context* contextB);
 
-        virtual ~ComposeShaderContext();
-
         void shadeSpan(int x, int y, SkPMColor[], int count) override;
 
     private:
@@ -69,8 +67,7 @@ public:
 protected:
     SkComposeShader(SkReadBuffer&);
     void flatten(SkWriteBuffer&) const override;
-    size_t onContextSize(const ContextRec&) const override;
-    Context* onCreateContext(const ContextRec&, void*) const override;
+    Context* onMakeContext(const ContextRec&, SkArenaAlloc*) const override;
 
 private:
     sk_sp<SkShader>     fShaderA;