Compute damage rect for Cast video compositing

chromecast/browser/cast_browser_main_parts.cc

 // Copyright 2014 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 "chromecast/browser/cast_browser_main_parts.h"
 
 #include <stddef.h>
 #include <string.h>
 
 #include <string>
@@ skipping 215 matching lines @@
 #if BUILDFLAG(IS_CAST_AUDIO_ONLY)
   { switches::kDisableGpu, "" },
 #endif
 #if defined(OS_LINUX)
 #if defined(ARCH_CPU_X86_FAMILY)
   // This is needed for now to enable the x11 Ozone platform to work with
   // current Linux/NVidia OpenGL drivers.
   { switches::kIgnoreGpuBlacklist, ""},
 #elif defined(ARCH_CPU_ARM_FAMILY)
 #if !BUILDFLAG(IS_CAST_AUDIO_ONLY)
-  { switches::kEnableHardwareOverlays, "" },
+  { switches::kEnableHardwareOverlays, "cast-underlay" },
 #endif
 #endif
 #endif  // defined(OS_LINUX)
   // Needed so that our call to GpuDataManager::SetGLStrings doesn't race
   // against GPU process creation (which is otherwise triggered from
   // BrowserThreadsStarted).  The GPU process will be created as soon as a
   // renderer needs it, which always happens after main loop starts.
   { switches::kDisableGpuEarlyInit, "" },
   // TODO(halliwell): Cast builds don't support ES3. Remove this switch when
   // support is added (crbug.com/659395)
@@ skipping 294 matching lines @@
 
 void CastBrowserMainParts::PostDestroyThreads() {
 #if !defined(OS_ANDROID)
   media_resource_tracker_->FinalizeAndDestroy();
   media_resource_tracker_ = nullptr;
 #endif
 }
 
 }  // namespace shell
 }  // namespace chromecast