Split tests into individual files. Got rid of globals by converting them to classes.

client/deps/glbench/src/all_tests.h

Index: client/deps/glbench/src/all_tests.h
diff --git a/client/deps/glbench/src/all_tests.h b/client/deps/glbench/src/all_tests.h
new file mode 100644
index 0000000000000000000000000000000000000000..357dd227543311b5d072ef864782a8c11b7fc2af
--- /dev/null
+++ b/client/deps/glbench/src/all_tests.h
@@ -0,0 +1,20 @@
+#ifndef BENCH_GL_ALL_TESTS_H_
+#define BENCH_GL_ALL_TESTS_H_
+
+namespace glbench {
+
+class TestBase;
+
+TestBase* GetSwapTest();
+TestBase* GetClearTest();
+TestBase* GetFillRateTest();
+TestBase* GetYuvToRgbTest(int type, const char* name);
+TestBase* GetReadPixelTest();
+TestBase* GetTriangleSetupTest();
+TestBase* GetAttributeFetchShaderTest();
+TestBase* GetVaryingsAndDdxyShaderTest();
+TestBase* GetWindowManagerCompositingTest(bool scissor);
+
+} // namespace glbench
+
+#endif // BENCH_GL_ALL_TESTS_H_