Fix GPU resource cache related assertions.

include/gpu/GrResourceKey.h

 
 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrResourceKey_DEFINED
 #define GrResourceKey_DEFINED
@@ skipping 27 matching lines @@
 
     /** Reset to an invalid key. */
     void reset() {
         GR_STATIC_ASSERT((uint16_t)kInvalidDomain == kInvalidDomain);
         fKey.reset(kMetaDataCnt);
         fKey[kHash_MetaDataIdx] = 0;
         fKey[kDomainAndSize_MetaDataIdx] = kInvalidDomain;
     }
 
     bool operator==(const GrResourceKey& that) const {
+        SkASSERT(this->isValid() && that.isValid());
         return 0 == memcmp(fKey.get(), that.fKey.get(), this->size());
     }
 
     GrResourceKey& operator=(const GrResourceKey& that) {
         if (this != &that) {
             size_t bytes = that.size();
             SkASSERT(SkIsAlign4(bytes));
             fKey.reset(SkToInt(bytes / sizeof(uint32_t)));
             memcpy(fKey.get(), that.fKey.get(), bytes);
         }
@@ skipping 158 matching lines @@
             int innerKeyCnt = SkToInt(innerKey.size()) >> 2;
             // add the inner key to the end of the key so that op[] can be indexed normally.
             for (int i = 0; i < innerKeyCnt; ++i) {
                 this->operator[](extraData32Cnt + i) = innerKey.data()[i];
             }
         }
     };
 };
 
 #endif