Clear shader disk cache after glProgramBinary failure.

gpu/command_buffer/common/activity_flags_unittest.cc

+// Copyright (c) 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "gpu/command_buffer/common/activity_flags.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace gpu {
+
+TEST(ActivityFlagsTest, BasicUsage) {
+  // Create the host activity flags.
+  GpuProcessHostActivityFlags host_flags;
+  EXPECT_FALSE(
+      host_flags.IsFlagSet(ActivityFlagsBase::FLAG_LOADING_PROGRAM_BINARY));
+
+  // Create the service activity flags from host memory.
+  GpuProcessActivityFlags service_flags(host_flags.CloneHandle());
+
+  // Ensure we can set and re-set flags.
+  {
+    GpuProcessActivityFlags::ScopedSetFlag scoped_set_flag(
+        &service_flags, ActivityFlagsBase::FLAG_LOADING_PROGRAM_BINARY);
+    EXPECT_TRUE(
+        host_flags.IsFlagSet(ActivityFlagsBase::FLAG_LOADING_PROGRAM_BINARY));
+  }
+  EXPECT_FALSE(
+      host_flags.IsFlagSet(ActivityFlagsBase::FLAG_LOADING_PROGRAM_BINARY));
+}
+
+TEST(ActivityFlagsTest, NotInitialized) {
+  // Get the service activity flags without providing host memory.
+  auto buffer = mojo::ScopedSharedBufferHandle();
+  GpuProcessActivityFlags service_flags(std::move(buffer));
+
+  // Set/Unset should not crash.
+  {
+    GpuProcessActivityFlags::ScopedSetFlag scoped_set_flag(
+        &service_flags, ActivityFlagsBase::FLAG_LOADING_PROGRAM_BINARY);
+  }
+}
+
+}  // namespace gpu