Cleanup GpuMemoryManager and helpers.

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 77 matching lines @@
         context = new GLNonOwnedContext(share_group);
       break;
   }
 
   if (!context->Initialize(compatible_surface, gpu_preference))
     return nullptr;
 
   return context;
 }
 
-bool GLContextEGL::GetTotalGpuMemory(size_t* bytes) {
-  DCHECK(bytes);
-  *bytes = 0;
-
-  // We can't query available GPU memory from the system on Android.
-  // Physical memory is also mis-reported sometimes (eg. Nexus 10 reports
-  // 1262MB when it actually has 2GB, while Razr M has 1GB but only reports
-  // 128MB java heap size). First we estimate physical memory using both.
-  size_t dalvik_mb = base::SysInfo::DalvikHeapSizeMB();
-  size_t physical_mb = base::SysInfo::AmountOfPhysicalMemoryMB();
-  size_t physical_memory_mb = 0;
-  if (dalvik_mb >= 256)
-    physical_memory_mb = dalvik_mb * 4;
-  else
-    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)   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.
-      limit_bytes = 8;
-    }
-    limit_bytes = limit_bytes * 1024 * 1024;
-  }
-  *bytes = limit_bytes;
-  return true;
 }
-
-}