Drop max texture cache size from 12x to 5x

Bug: 137853925
Test: none
Change-Id: I8d05871a5f54c8e5d6528a6a8ed48f73464a1221
diff --git a/libs/hwui/renderthread/CacheManager.cpp b/libs/hwui/renderthread/CacheManager.cpp
index 20e607d..dc07f0d 100644
--- a/libs/hwui/renderthread/CacheManager.cpp
+++ b/libs/hwui/renderthread/CacheManager.cpp
@@ -39,7 +39,7 @@
 // to the screen resolution. This is meant to be a conservative default based on
 // that analysis. The 4.0f is used because the default pixel format is assumed to
 // be ARGB_8888.
-#define SURFACE_SIZE_MULTIPLIER (12.0f * 4.0f)
+#define SURFACE_SIZE_MULTIPLIER (5.0f * 4.0f)
 #define BACKGROUND_RETENTION_PERCENTAGE (0.5f)
 
 CacheManager::CacheManager(const DisplayInfo& display)