Decouple some graphics-related IsLowEndDevice() policies for 1GB devices.

content/browser/renderer_host/compositor_impl_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 "content/browser/renderer_host/compositor_impl_android.h"
 
 #include <android/bitmap.h>
 #include <android/native_window_jni.h>
 #include <stdint.h>
 #include <unordered_set>
@@ skipping 151 matching lines @@
   gpu::gles2::ContextCreationAttribHelper attributes;
   attributes.alpha_size = -1;
   attributes.stencil_size = 0;
   attributes.depth_size = 0;
   attributes.samples = 0;
   attributes.sample_buffers = 0;
   attributes.bind_generates_resource = false;
 
   if (has_transparent_background) {
     attributes.alpha_size = 8;
-  } else if (base::SysInfo::IsLowEndDevice()) {
+  } else if (base::SysInfo::AmountOfPhysicalMemoryMB() <= 512) {
     // In this case we prefer to use RGB565 format instead of RGBA8888 if
     // possible.
     // TODO(danakj): GpuCommandBufferStub constructor checks for alpha == 0 in
     // order to enable 565, but it should avoid using 565 when -1s are
     // specified
     // (IOW check that a <= 0 && rgb > 0 && rgb <= 565) then alpha should be
     // -1.
     // TODO(liberato): This condition is memorized in ComositorView.java, to
     // avoid using two surfaces temporarily during alpha <-> no alpha
     // transitions.  If these mismatch, then we risk a power regression if the
@@ skipping 686 matching lines @@
   }
   GetSurfaceManager()->UnregisterFrameSinkHierarchy(frame_sink_id_,
                                                     frame_sink_id);
 }
 
 bool CompositorImpl::HavePendingReadbacks() {
   return !readback_layer_tree_->children().empty();
 }
 
 }  // namespace content