cc: Make 1/4th default low res scale.

content/browser/gpu/gpu_data_manager_impl_private.cc

 // Copyright (c) 2013 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/gpu/gpu_data_manager_impl_private.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 251 matching lines @@
       gpu_info.gl_vendor.find("Broadcom") != std::string::npos;
   bool is_mali_t604 = is_arm &&
       gpu_info.gl_renderer.find("Mali-T604") != std::string::npos;
   bool is_nvidia =
       gpu_info.gl_vendor.find("NVIDIA") != std::string::npos;
 
   bool is_vivante =
       gpu_info.gl_extensions.find("GL_VIV_shader_binary") !=
       std::string::npos;
 
-  bool is_nexus7 =
-      gpu_info.machine_model.find("Nexus 7") != std::string::npos;
-  bool is_nexus10 =
-      gpu_info.machine_model.find("Nexus 10") != std::string::npos;
-
   // IMG: avoid context switching perf problems, crashes with share groups
   // Mali-T604: http://crbug.com/154715
   // QualComm, NVIDIA: Crashes with share groups
   if (is_vivante || is_img || is_mali_t604 || is_nvidia || is_qualcomm ||
       is_broadcom)
     command_line->AppendSwitch(switches::kEnableVirtualGLContexts);
 
   gfx::DeviceDisplayInfo info;
   int default_tile_size = 256;
 
@@ skipping 24 matching lines @@
   if (default_tile_size != 256 &&
       !command_line->HasSwitch(switches::kDefaultTileWidth) &&
       !command_line->HasSwitch(switches::kDefaultTileHeight)) {
     std::stringstream size;
     size << default_tile_size;
     command_line->AppendSwitchASCII(
         switches::kDefaultTileWidth, size.str());
     command_line->AppendSwitchASCII(
         switches::kDefaultTileHeight, size.str());
   }
-
-  // Increase the resolution of low resolution tiles for Nexus tablets.
-  if ((is_nexus7 || is_nexus10) &&
-      !command_line->HasSwitch(
-          cc::switches::kLowResolutionContentsScaleFactor)) {
-    command_line->AppendSwitchASCII(
-        cc::switches::kLowResolutionContentsScaleFactor, "0.25");
-  }
 }
 #endif  // OS_ANDROID
 
 // Block all domains' use of 3D APIs for this many milliseconds if
 // approaching a threshold where system stability might be compromised.
 const int64 kBlockAllDomainsMs = 10000;
 const int kNumResetsWithinDuration = 1;
 
 // Enums for UMA histograms.
 enum BlockStatusHistogram {
@@ skipping 895 matching lines @@
 void GpuDataManagerImplPrivate::OnGpuProcessInitFailure() {
   gpu_process_accessible_ = false;
   gpu_info_.finalized = true;
   complete_gpu_info_already_requested_ = true;
   // Some observers might be waiting.
   NotifyGpuInfoUpdate();
 }
 
 }  // namespace content