Add GrProxyProvider

This pulls all the proxy tracking & creation functionality out of the GrResourceCache and GrResourceProvider and consolidates it in the GrProxyProvider.

Change-Id: I7256f7c544319a70c1bd93dd5a9ccbe5fa0a544f
Reviewed-on: https://skia-review.googlesource.com/91501
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
diff --git a/tests/TestUtils.h b/tests/TestUtils.h
index 6f878bf..fc310be 100644
--- a/tests/TestUtils.h
+++ b/tests/TestUtils.h
@@ -29,6 +29,6 @@
                             bool onlyTestRTConfig, const char* testName);
 
 // Ensure that RGBA 8888 pixels can be copied into 'dstContext'
-void test_copy_to_surface(skiatest::Reporter*, GrResourceProvider*,
+void test_copy_to_surface(skiatest::Reporter*, GrProxyProvider*,
                           GrSurfaceContext* dstContext, const char* testName);
 #endif