Not for commit: crash GPU process in glCreateGpuMemoryBufferImageCHROMIUM.

gpu/ipc/client/command_buffer_proxy_impl.cc

Index: gpu/ipc/client/command_buffer_proxy_impl.cc
diff --git a/gpu/ipc/client/command_buffer_proxy_impl.cc b/gpu/ipc/client/command_buffer_proxy_impl.cc
index faf69b980ed8cbc2567353d7faaf7d3c9290e6ed..b9ccce12a6a6ca1c08b53953cc2cccde913e90ca 100644
--- a/gpu/ipc/client/command_buffer_proxy_impl.cc
+++ b/gpu/ipc/client/command_buffer_proxy_impl.cc
@@ -522,8 +522,12 @@ int32_t CommandBufferProxyImpl::CreateGpuMemoryBufferImage(
           gfx::Size(width, height),
           gpu::DefaultBufferFormatForImageFormat(internal_format),
           gfx::BufferUsage::SCANOUT, gpu::kNullSurfaceHandle));
-  if (!buffer)
+  if (!buffer) {
+    fprintf(stderr, "CommandBufferProxyImpl::CreateGpuMemoryBufferImage: no buffer from AllocateGpuMemoryBuffer\n");
     return -1;
+  } else {
+    fprintf(stderr, "CommandBufferProxyImpl::CreateGpuMemoryBufferImage: got a buffer\n");
+  }
 
   int32_t result =
       CreateImage(buffer->AsClientBuffer(), width, height, internal_format);