[Android] Use 1/4 scale low resolution tiles on high-res devices

content/gpu/gpu_info_collector_android.cc

Index: content/gpu/gpu_info_collector_android.cc
diff --git a/content/gpu/gpu_info_collector_android.cc b/content/gpu/gpu_info_collector_android.cc
index 2d594cfcc732de4db84bf5a47b64ff809231da33..99a6696a4e198c700fd27d091e553cd54e9d58ab 100644
--- a/content/gpu/gpu_info_collector_android.cc
+++ b/content/gpu/gpu_info_collector_android.cc
@@ -11,6 +11,7 @@
 #include "base/string_piece.h"
 #include "base/string_util.h"
 #include "base/strings/string_split.h"
+#include "cc/switches.h"
 #include "content/public/common/content_switches.h"
 #include "ui/gfx/android/device_display_info.h"
 
@@ -123,6 +124,15 @@ bool CollectBasicGraphicsInfo(content::GPUInfo* gpu_info) {
         switches::kDefaultTileHeight, size.str());
   }
 
+  // Increase the resolution of low resolution tiles for devices with high
+  // resolution displays.
+  if (default_tile_size >= 512 &&
+      !CommandLine::ForCurrentProcess()->HasSwitch(
+          cc::switches::kLowResolutionContentsScaleFactor)) {
+    CommandLine::ForCurrentProcess()->AppendSwitchASCII(
+        cc::switches::kLowResolutionContentsScaleFactor, "4");
+  }
+
   return true;
 }