ui: Add RGBX_8888 buffer format.

content/common/child_process_host_impl.cc

Index: content/common/child_process_host_impl.cc
diff --git a/content/common/child_process_host_impl.cc b/content/common/child_process_host_impl.cc
index 1ae2cc06437143803d0b12fe35796c8a5f774d2b..c9cf76bac9836f4b33952e5dd0d612b1634905cd 100644
--- a/content/common/child_process_host_impl.cc
+++ b/content/common/child_process_host_impl.cc
@@ -294,9 +294,8 @@ void ChildProcessHostImpl::OnAllocateGpuMemoryBuffer(
 
   // AllocateForChildProcess() will check if |width| and |height| are valid
   // and handle failure in a controlled way when not. We just need to make
-  // sure |format| and |usage| are supported here.
-  if (GpuMemoryBufferImplSharedMemory::IsFormatSupported(format) &&
-      GpuMemoryBufferImplSharedMemory::IsUsageSupported(usage)) {
+  // sure |usage| is supported here.
+  if (GpuMemoryBufferImplSharedMemory::IsUsageSupported(usage)) {
     *handle = GpuMemoryBufferImplSharedMemory::AllocateForChildProcess(
         id, gfx::Size(width, height), format, peer_process_.Handle());
   }