Remove GpuInfo::can_lose_context.

gpu/config/gpu_info.h

Index: gpu/config/gpu_info.h
diff --git a/gpu/config/gpu_info.h b/gpu/config/gpu_info.h
index 73a6a9ea07afb970415f2af6f09fa62ab707634f..c35993cc3b46877efb7261bbcb3bc7c3d37308d8 100644
--- a/gpu/config/gpu_info.h
+++ b/gpu/config/gpu_info.h
@@ -119,10 +119,6 @@ struct GPU_EXPORT GPUInfo {
   GPUInfo(const GPUInfo& other);
   ~GPUInfo();
 
-  bool SupportsAccelerated2dCanvas() const {
-    return !can_lose_context && !software_rendering;
-  }
-
   // The amount of time taken to get from the process starting to the message
   // loop being pumped.
   base::TimeDelta initialization_time;
@@ -209,10 +205,6 @@ struct GPU_EXPORT GPUInfo {
   // reset detection or notification not available.
   uint32_t gl_reset_notification_strategy;
 
-  // The device semantics, i.e. whether the Vista and Windows 7 specific
-  // semantics are available.
-  bool can_lose_context;
-
   bool software_rendering;
 
   // Whether the driver uses direct rendering. True on most platforms, false on