Use SK_BUILD_FOR_ANDROID_FRAMEWORK in compose

src/core/SkComposeShader.cpp

Index: src/core/SkComposeShader.cpp
diff --git a/src/core/SkComposeShader.cpp b/src/core/SkComposeShader.cpp
index 0dc0da68ef9b8dfabae11b0b561d9b5c6dd2b41f..287702ec66fbb76e0ddeb8355e5dae74f969b4cc 100644
--- a/src/core/SkComposeShader.cpp
+++ b/src/core/SkComposeShader.cpp
@@ -137,8 +137,10 @@ void SkComposeShader::ComposeShaderContext::shadeSpan(int x, int y, SkPMColor re
     SkXfermode*        mode = static_cast<const SkComposeShader&>(fShader).fMode;
     unsigned           scale = SkAlpha255To256(this->getPaintAlpha());
 
-#ifdef SK_BUILD_FOR_ANDROID
-    scale = 256;    // ugh -- maintain old bug/behavior for now
+#ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK
+    // In the Android framework, make compose shader ignore the paint's alpha.
+    // This matches the old behavior. FIXME: Can we remove this difference?
+    scale = 256;
 #endif
 
     SkPMColor   tmp[TMP_COLOR_COUNT];