Disable unified media pipeline (Spitzer) for Webview for PowerVR

content/browser/gpu/gpu_data_manager_impl_private.cc

Index: content/browser/gpu/gpu_data_manager_impl_private.cc
diff --git a/content/browser/gpu/gpu_data_manager_impl_private.cc b/content/browser/gpu/gpu_data_manager_impl_private.cc
index 4ad247838e4d18a0a156161140888b67915cba18..6ba93d5bf6b9e5c15a30a5c6b1ed79f7eefd8eda 100644
--- a/content/browser/gpu/gpu_data_manager_impl_private.cc
+++ b/content/browser/gpu/gpu_data_manager_impl_private.cc
@@ -48,6 +48,9 @@
 #if defined(OS_WIN)
 #include "base/win/windows_version.h"
 #endif  // OS_WIN
+#if defined(OS_ANDROID)
+#include "media/base/media_switches.h"
+#endif
 
 namespace content {
 
@@ -744,6 +747,13 @@ void GpuDataManagerImplPrivate::AppendGpuCommandLine(
     }
   }
 
+#if defined(OS_ANDROID)
+  if (command_line->HasSwitch(switches::kEnableThreadedTextureMailboxes) &&

[Ken Russell (switch to Gerrit), 2016/08/26 00:22:15]

Question: is this the key flag which distinguishes WebView from Chromium?

+      IsDriverBugWorkaroundActive(gpu::AVDA_NO_EGLIMAGE_FOR_LUMINANCE_TEX)) {
+    command_line->AppendSwitch(switches::kDisableUnifiedMediaPipeline);
+  }
+#endif
+
 #if defined(OS_WIN)
   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_VPX_DECODE) &&
       gpu_preferences) {