Harden CommandBufferProxyImpl

content/common/gpu/client/command_buffer_metrics.cc

Index: content/common/gpu/client/command_buffer_metrics.cc
diff --git a/content/common/gpu/client/command_buffer_metrics.cc b/content/common/gpu/client/command_buffer_metrics.cc
index 5065ca5da6c388aaa400d6527f1f2181e05172c1..38590c36c08d4596dde9b99468128ea41018f3e5 100644
--- a/content/common/gpu/client/command_buffer_metrics.cc
+++ b/content/common/gpu/client/command_buffer_metrics.cc
@@ -24,8 +24,10 @@ enum CommandBufferContextLostReason {
   CONTEXT_LOST_UNKNOWN,
   CONTEXT_LOST_OUT_OF_MEMORY,
   CONTEXT_LOST_MAKECURRENT_FAILED,
+  CONTEXT_LOST_INVALID_GPU_MESSAGE,
   // Add new values here and update _MAX_ENUM.
-  CONTEXT_LOST_REASON_MAX_ENUM = CONTEXT_LOST_MAKECURRENT_FAILED
+  // Also update //tools/metrics/histograms/histograms.xml
+  CONTEXT_LOST_REASON_MAX_ENUM = CONTEXT_LOST_INVALID_GPU_MESSAGE
 };
 
 CommandBufferContextLostReason GetContextLostReason(
@@ -45,6 +47,8 @@ CommandBufferContextLostReason GetContextLostReason(
         return CONTEXT_LOST_MAKECURRENT_FAILED;
       case gpu::error::kGpuChannelLost:
         return CONTEXT_LOST_GPU_CHANNEL_ERROR;
+      case gpu::error::kInvalidGpuMessage:
+        return CONTEXT_LOST_INVALID_GPU_MESSAGE;
     }
   }
   switch (error) {