Remove SK_SUPPORT_LEGACY_SHADER_LOCALMATRIX.

This is no longer needed by Android.

BUG=skia:1976
R=reed@google.com

Author: scroggo@google.com

Review URL: https://codereview.chromium.org/379323002
diff --git a/gyp/skia_for_android_framework_defines.gypi b/gyp/skia_for_android_framework_defines.gypi
index ebb480f..93d80ea 100644
--- a/gyp/skia_for_android_framework_defines.gypi
+++ b/gyp/skia_for_android_framework_defines.gypi
@@ -19,7 +19,6 @@
       'SK_SUPPORT_LEGACY_CLIPTOLAYERFLAG',
       # Transitional, for deprecated SkCanvas::SaveFlags methods.
       'SK_ATTR_DEPRECATED=SK_NOTHING_ARG1',
-      'SK_SUPPORT_LEGACY_SHADER_LOCALMATRIX',
     ],
   },
 }
diff --git a/include/core/SkShader.h b/include/core/SkShader.h
index 33a7a15..e5af40d 100644
--- a/include/core/SkShader.h
+++ b/include/core/SkShader.h
@@ -55,19 +55,6 @@
      */
     bool hasLocalMatrix() const { return !fLocalMatrix.isIdentity(); }
 
-#ifdef SK_SUPPORT_LEGACY_SHADER_LOCALMATRIX
-    /**
-     *  Set the shader's local matrix.
-     *  @param localM   The shader's new local matrix.
-     */
-    void setLocalMatrix(const SkMatrix& localM) { fLocalMatrix = localM; }
-
-    /**
-     *  Reset the shader's local matrix to identity.
-     */
-    void resetLocalMatrix() { fLocalMatrix.reset(); }
-#endif
-
     enum TileMode {
         /** replicate the edge color if the shader draws outside of its
          *  original bounds
@@ -479,6 +466,8 @@
     virtual Context* onCreateContext(const ContextRec&, void* storage) const;
 
 private:
+    // This is essentially const, but not officially so it can be modified in
+    // constructors.
     SkMatrix fLocalMatrix;
 
     // So the SkLocalMatrixShader can whack fLocalMatrix in its SkReadBuffer constructor.
diff --git a/src/core/SkPaintPriv.cpp b/src/core/SkPaintPriv.cpp
index a8b52e9..10ff95c 100644
--- a/src/core/SkPaintPriv.cpp
+++ b/src/core/SkPaintPriv.cpp
@@ -86,9 +86,6 @@
      *  false.
      */
     return false
-#ifdef SK_SUPPORT_LEGACY_SHADER_LOCALMATRIX
-           || paint.getShader()
-#endif
 #ifdef SK_SUPPORT_LEGACY_LAYERRASTERIZER_API
            || paint.getRasterizer()
 #endif