First draft to enable turning off compositor for unit tests.

views/run_all_unittests.cc

Index: views/run_all_unittests.cc
diff --git a/views/run_all_unittests.cc b/views/run_all_unittests.cc
index 611a77c047202e63f48810f84c55afee2b2d32f5..3a0e106f12044ab32ef402c44a13e00f79487a8c 100644
--- a/views/run_all_unittests.cc
+++ b/views/run_all_unittests.cc
@@ -6,6 +6,7 @@
 #include "base/test/test_suite.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_paths.h"
+#include "views/view.h"
 
 class ViewTestSuite : public base::TestSuite {
  public:
@@ -17,6 +18,11 @@ class ViewTestSuite : public base::TestSuite {
     ui::RegisterPathProvider();
     base::TestSuite::Initialize();
     ResourceBundle::InitSharedInstance("en-US");
+
+#if defined(TOUCH_UI)
+    // Disable GPU browser compositor during unit tests.
+    views::View::set_use_acceleration_when_possible(false);
+#endif
   }
 };