Update from https://crrev.com/307330

ui/gl/gl_context_android.cc

 // Copyright (c) 2012 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 "ui/gl/gl_context.h"
 
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/sys_info.h"
 #include "ui/gl/gl_bindings.h"
@@ skipping 102 matching lines @@
     physical_memory_mb = std::max(dalvik_mb * 4,
                                   (physical_mb * 4) / 3);
 
   // Now we take a default of 1/8th of memory on high-memory devices,
   // and gradually scale that back for low-memory devices (to be nicer
   // to other apps so they don't get killed). Examples:
   // Nexus 4/10(2GB)    256MB (normally 128MB)
   // Droid Razr M(1GB)  114MB (normally 57MB)
   // Galaxy Nexus(1GB)  100MB (normally 50MB)
   // Xoom(1GB)          100MB (normally 50MB)
-  // Nexus S(low-end)   12MB (normally 8MB)
+  // Nexus S(low-end)   8MB (normally 8MB)
   // Note that the compositor now uses only some of this memory for
   // pre-painting and uses the rest only for 'emergencies'.
   static size_t limit_bytes = 0;
   if (limit_bytes == 0) {
     // NOTE: Non-low-end devices use only 50% of these limits,
     // except during 'emergencies' where 100% can be used.
     if (!base::SysInfo::IsLowEndDevice()) {
       if (physical_memory_mb >= 1536)
         limit_bytes = physical_memory_mb / 8; // >192MB
       else if (physical_memory_mb >= 1152)
         limit_bytes = physical_memory_mb / 8; // >144MB
       else if (physical_memory_mb >= 768)
         limit_bytes = physical_memory_mb / 10; // >76MB
       else
         limit_bytes = physical_memory_mb / 12; // <64MB
     } else {
       // Low-end devices have 512MB or less memory by definition
       // so we hard code the limit rather than relying on the heuristics
       // above. Low-end devices use 4444 textures so we can use a lower limit.
-      // NOTE: Low-end uses 2/3 (67%) of this memory in practice, so we have
-      // increased the limit to 12 (8MB, or 12MB in emergencies).
-      limit_bytes = 12;
+      limit_bytes = 8;
     }
     limit_bytes = limit_bytes * 1024 * 1024;
   }
   *bytes = limit_bytes;
   return true;
 }
 
 }