Remove deferred clear from SkGpuDevice

tests/ResourceCacheTest.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 // Include here to ensure SK_SUPPORT_GPU is set correctly before it is examined.
 #include "SkTypes.h"
 
@@ skipping 169 matching lines @@
                         smallMSAART0 && smallMSAART1 &&
                         smallMSAART0->asRenderTarget() &&
                         smallMSAART1->asRenderTarget() &&
                         resourceProvider->attachStencilAttachment(smallMSAART0->asRenderTarget()) !=
                         resourceProvider->attachStencilAttachment(smallMSAART1->asRenderTarget()));
         }
     }
 }
 
 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ResourceCacheWrappedResources, reporter, context) {
-    const GrGpu* gpu = context->getGpu();
+    GrGpu* gpu = context->getGpu();
     // this test is only valid for GL
     if (!gpu || !gpu->glContextForTesting()) {
         return;
     }
 
     GrBackendObject texHandles[2];
     static const int kW = 100;
     static const int kH = 100;
 
     texHandles[0] = gpu->createTestingOnlyBackendTexture(nullptr, kW, kH, kRGBA_8888_GrPixelConfig);
@@ skipping 1107 matching lines @@
     test_cache_chained_purge(reporter);
     test_resource_size_changed(reporter);
     test_timestamp_wrap(reporter);
     test_flush(reporter);
     test_large_resource_count(reporter);
     test_custom_data(reporter);
     test_abandoned(reporter);
 }
 
 #endif