DCHECK if shader compilation fails that it's due to context loss.

content/common/gpu/client/command_buffer_proxy_impl.cc

Index: content/common/gpu/client/command_buffer_proxy_impl.cc
diff --git a/content/common/gpu/client/command_buffer_proxy_impl.cc b/content/common/gpu/client/command_buffer_proxy_impl.cc
index 36e64592cfb815b2597b827ee24acb7fda4e928a..61217f19ac872965c597b8fcd3afed1aa89b11a4 100644
--- a/content/common/gpu/client/command_buffer_proxy_impl.cc
+++ b/content/common/gpu/client/command_buffer_proxy_impl.cc
@@ -446,6 +446,10 @@ void CommandBufferProxyImpl::SetLock(base::Lock* lock) {
   lock_ = lock;
 }
 
+bool CommandBufferProxyImpl::IsGpuChannelLost() {
+  return channel_->IsLost();

[piman, 2015/06/08 22:21:16]

!channel_ || channel_->IsLost()

To my dismay we reset channel_ in some places (when lost).

[danakj, 2015/06/08 22:22:37]

Done.

+}
+
 uint32 CommandBufferProxyImpl::InsertSyncPoint() {
   CheckLock();
   if (last_state_.error != gpu::error::kNoError)