mash: Do not use InProcessContextFactory in tests.

mash/test/mash_test_suite.h

Index: mash/test/mash_test_suite.h
diff --git a/mash/test/mash_test_suite.h b/mash/test/mash_test_suite.h
index d93d64bc183cf25e2659a5f9b0b265b087aaf2bf..8bfa7bd5db82633e916bc1dafe3b7762976cbcd9 100644
--- a/mash/test/mash_test_suite.h
+++ b/mash/test/mash_test_suite.h
@@ -18,6 +18,8 @@ class Env;
 namespace mash {
 namespace test {
 
+class TestContextFactory;
+
 class MashTestSuite : public base::TestSuite {
  public:
   MashTestSuite(int argc, char** argv);
@@ -31,6 +33,7 @@ class MashTestSuite : public base::TestSuite {
  private:
   base::TestDiscardableMemoryAllocator discardable_memory_allocator_;
   std::unique_ptr<aura::Env> env_;
+  std::unique_ptr<TestContextFactory> compositor_context_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MashTestSuite);
 };