SkPDF: cache metrics once.

tests/HashTest.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkChecksum.h"
 #include "SkString.h"
 #include "SkTHash.h"
@@ skipping 72 matching lines @@
     REPORTER_ASSERT(r, *set.find(SkString("Hello")) == SkString("Hello"));
 
     set.remove(SkString("Hello"));
     REPORTER_ASSERT(r, !set.contains(SkString("Hello")));
     REPORTER_ASSERT(r, set.count() == 1);
 
     set.reset();
     REPORTER_ASSERT(r, set.count() == 0);
 }
 
-namespace {
-
-class CopyCounter {
-public:
-    CopyCounter() : fID(0), fCounter(nullptr) {}
-
-    CopyCounter(uint32_t id, uint32_t* counter) : fID(id), fCounter(counter) {}
-
-    CopyCounter(const CopyCounter& other)
-        : fID(other.fID)
-        , fCounter(other.fCounter) {
-        SkASSERT(fCounter);
-        *fCounter += 1;
-    }
-
-    void operator=(const CopyCounter& other) {
-        fID = other.fID;
-        fCounter = other.fCounter;
-        *fCounter += 1;
-    }
-
-    bool operator==(const CopyCounter& other) const {
-        return fID == other.fID;
-    }
-
-private:
-    uint32_t  fID;
-    uint32_t* fCounter;
-};
-
-struct HashCopyCounter {
-    uint32_t operator()(const CopyCounter&) const {
-        return 0; // let them collide, what do we care?
-    }
-};
-
-}
-
-DEF_TEST(HashSetCopyCounter, r) {
-    SkTHashSet<CopyCounter, HashCopyCounter> set;
-
-    uint32_t globalCounter = 0;
-    CopyCounter copyCounter1(1, &globalCounter);
-    CopyCounter copyCounter2(2, &globalCounter);
-    REPORTER_ASSERT(r, globalCounter == 0);
-
-    set.add(copyCounter1);
-    REPORTER_ASSERT(r, globalCounter == 1);
-    REPORTER_ASSERT(r, set.contains(copyCounter1));
-    REPORTER_ASSERT(r, globalCounter == 1);
-    set.add(copyCounter1);
-    // We allow copies for same-value adds for now.
-    REPORTER_ASSERT(r, globalCounter == 2);
-
-    set.add(copyCounter2);
-    REPORTER_ASSERT(r, globalCounter == 3);
-    REPORTER_ASSERT(r, set.contains(copyCounter1));
-    REPORTER_ASSERT(r, set.contains(copyCounter2));
-    REPORTER_ASSERT(r, globalCounter == 3);
-    set.add(copyCounter1);
-    set.add(copyCounter2);
-    // We allow copies for same-value adds for now.
-    REPORTER_ASSERT(r, globalCounter == 5);
-}