Implement vertex buffer caching in the tessellated path renderer.

tests/ResourceCacheTest.cpp

Index: tests/ResourceCacheTest.cpp
diff --git a/tests/ResourceCacheTest.cpp b/tests/ResourceCacheTest.cpp
index b795b01b24899135ec153c77b33174490e3320cb..2231cfee881c44e9bd40344a3ce836f528518818 100644
--- a/tests/ResourceCacheTest.cpp
+++ b/tests/ResourceCacheTest.cpp
@@ -1223,6 +1223,18 @@ static void test_large_resource_count(skiatest::Reporter* reporter) {
     }
 }
 
+static void test_custom_data(skiatest::Reporter* reporter) {
+    GrUniqueKey key1, key2;
+    int foo = 4132;
+    key1.setCustomData(SkData::NewWithCopy(&foo, sizeof(foo)));
+    REPORTER_ASSERT(reporter, *(int*) key1.getCustomData()->data() == 4132);
+    REPORTER_ASSERT(reporter, key2.getCustomData() == nullptr);
+
+    // Test that copying a key also takes a ref on its custom data.
+    GrUniqueKey key3 = key1;
+    REPORTER_ASSERT(reporter, *(int*) key3.getCustomData()->data() == 4132);

[bsalomon, 2015/08/03 19:34:54]

Can you test that if you stick a resource in the cache, unref it,  and retrieve
it by key that the custom data is correct? Just want to make sure we don't ever
lose track of the data while the resource isn't being used.

[Stephen White, 2015/08/03 19:52:24]

Done.

+}
+
 ////////////////////////////////////////////////////////////////////////////////
 DEF_GPUTEST(ResourceCache, reporter, factory) {
     for (int type = 0; type < GrContextFactory::kLastGLContextType; ++type) {
@@ -1262,6 +1274,7 @@ DEF_GPUTEST(ResourceCache, reporter, factory) {
     test_timestamp_wrap(reporter);
     test_flush(reporter);
     test_large_resource_count(reporter);
+    test_custom_data(reporter);
 }
 
 #endif