Add "sample locations" feature to GrProcessor

include/private/SkTArray.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkTArray_DEFINED
 #define SkTArray_DEFINED
 
@@ skipping 167 matching lines @@
     }
 
     /**
      * Version of above that uses a copy constructor to initialize all n items
      * to the same T.
      */
     T* push_back_n(int n, const T& t) {
         SkASSERT(n >= 0);
         T* newTs = reinterpret_cast<T*>(this->push_back_raw(n));
         for (int i = 0; i < n; ++i) {
-            new (newTs[i]) T(t);
+            new (newTs + i) T(t);
         }
         return newTs;
     }
 
     /**
      * Version of above that uses a copy constructor to initialize the n items
      * to separate T values.
      */
     T* push_back_n(int n, const T t[]) {
         SkASSERT(n >= 0);
@@ skipping 307 matching lines @@
     SkSTArray& operator= (const INHERITED& array) {
         INHERITED::operator=(array);
         return *this;
     }
 
 private:
     SkAlignedSTStorage<N,T> fStorage;
 };
 
 #endif