Enabled shader disk cache on android.

R=vmiura@chromium.org
BUG=451216
TEST=local traces + trybots

Review URL: https://codereview.chromium.org/927653003

Cr-Commit-Position: refs/heads/master@{#316400}

content/browser/android/content_startup_flags.cc

@@ -70,8 +70,6 @@ void SetContentCommandLineFlags(bool single_process,
   if (base::SysInfo::IsLowEndDevice())
     parsed_command_line->AppendSwitch(switches::kInProcessGPU);
 
-  parsed_command_line->AppendSwitch(switches::kDisableGpuShaderDiskCache);
-
   parsed_command_line->AppendSwitch(switches::kEnableViewportMeta);
   parsed_command_line->AppendSwitch(
       switches::kMainFrameResizesAreOrientationChanges);