Disable WebGL on Android by default (but allow it to be enabled)

content/browser/web_contents/web_contents_impl.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/web_contents/web_contents_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
@@ skipping 416 matching lines @@
   prefs.local_storage_enabled =
       !command_line.HasSwitch(switches::kDisableLocalStorage);
   prefs.databases_enabled =
       !command_line.HasSwitch(switches::kDisableDatabases);
   prefs.webaudio_enabled =
       !command_line.HasSwitch(switches::kDisableWebAudio);
 
   prefs.experimental_webgl_enabled =
       GpuProcessHost::gpu_enabled() &&
       !command_line.HasSwitch(switches::kDisable3DAPIs) &&
+#if defined(OS_ANDROID)
+      command_line.HasSwitch(switches::kEnableExperimentalWebGL);
+#else
       !command_line.HasSwitch(switches::kDisableExperimentalWebGL);
+#endif
 
   prefs.flash_3d_enabled =
       GpuProcessHost::gpu_enabled() &&
       !command_line.HasSwitch(switches::kDisableFlash3d);
   prefs.flash_stage3d_enabled =
       GpuProcessHost::gpu_enabled() &&
       !command_line.HasSwitch(switches::kDisableFlashStage3d);
 
   prefs.gl_multisampling_enabled =
       !command_line.HasSwitch(switches::kDisableGLMultisampling);
@@ skipping 2674 matching lines @@
       browser_plugin_host()->embedder_render_process_host();
   *embedder_container_id = browser_plugin_host()->instance_id();
   int embedder_process_id =
       embedder_render_process_host ? embedder_render_process_host->GetID() : -1;
   if (embedder_process_id != -1) {
     *embedder_channel_name =
         StringPrintf("%d.r%d", render_view_host->GetProcess()->GetID(),
                      embedder_process_id);
   }
 }