Generate list of GPU contexts outside SurfaceTest tests

tests/TestTest.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 "Test.h"
+
+#if SK_SUPPORT_GPU
+#include "GrContext.h"
+#include "gl/SkGLContext.h"
+#endif
+
+
+// This is an example of a normal test.
+DEF_TEST(TestNormal, reporter) {
+    REPORTER_ASSERT(reporter, reporter);
+}
+
+// This is an example of a GPU test that uses common GrContextFactory factory to do the test.
+#if SK_SUPPORT_GPU
+DEF_GPUTEST(TestGpuFactory, reporter, factory) {
+    REPORTER_ASSERT(reporter, reporter);
+    REPORTER_ASSERT(reporter, factory);
+}
+#endif
+
+// This is an example of a GPU test that tests a property that should work for all GPU contexts.
+// Note: Some of the contexts might not produce a rendering output.
+#if SK_SUPPORT_GPU
+DEF_GPUTEST_FOR_ALL_CONTEXTS(TestGpuAllContexts, reporter, context) {
+    REPORTER_ASSERT(reporter, reporter);
+    REPORTER_ASSERT(reporter, context);
+}
+#endif
+
+// This is an example of a GPU test that tests a property that should work for all GPU contexts that
+// produce a rendering output.
+#if SK_SUPPORT_GPU
+DEF_GPUTEST_FOR_RENDERING_CONTEXTS(TestGpuRenderingContexts, reporter, context) {
+    REPORTER_ASSERT(reporter, reporter);
+    REPORTER_ASSERT(reporter, context);
+}
+#endif
+
+// This is an example of a GPU test that tests a property that should work at least for the native
+// GPU context. If the test takes a long time to run, it may be appropriate to test only the native
+// context.
+#if SK_SUPPORT_GPU
+DEF_GPUTEST_FOR_NATIVE_CONTEXT(TestGpuNativeContext, reporter, context) {
+    REPORTER_ASSERT(reporter, reporter);
+    REPORTER_ASSERT(reporter, context);
+}
+#endif
+
+// This is an example of a GPU test that tests a property that uses the null GPU context.  It should
+// be used if the test tests some behavior that is mocked with the null context.
+#if SK_SUPPORT_GPU
+DEF_GPUTEST_FOR_NULL_CONTEXT(TestGpuNullContext, reporter, context) {
+    REPORTER_ASSERT(reporter, reporter);
+    REPORTER_ASSERT(reporter, context);
+}
+#endif
+
+// This is an example of a GPU test that tests a property that should work for all GPU contexts.
+// It uses the additional SkGLContext* glContext to implement the test.
+#if SK_SUPPORT_GPU
+DEF_GPUTEST_FOR_ALL_CONTEXTS(TestGpuGrContextAndGLContext, reporter, context, glContext) {
+    REPORTER_ASSERT(reporter, reporter);
+    REPORTER_ASSERT(reporter, context);
+    REPORTER_ASSERT(reporter, glContext);
+}
+#endif
+