Avoid setting high contrast in every view draw

Test: high contrast text still works
Change-Id: I6674d1aca8dddf7eb9725a5346aed12ef1dbc195
diff --git a/libs/hwui/Properties.cpp b/libs/hwui/Properties.cpp
index acc7539..fe291d2 100644
--- a/libs/hwui/Properties.cpp
+++ b/libs/hwui/Properties.cpp
@@ -51,6 +51,7 @@
 ProfileType Properties::sProfileType = ProfileType::None;
 bool Properties::sDisableProfileBars = false;
 RenderPipelineType Properties::sRenderPipelineType = RenderPipelineType::NotInitialized;
+bool Properties::enableHighContrastText = false;
 
 bool Properties::waitForGpuCompletion = false;
 bool Properties::forceDrawFrame = false;