Move pipeline statistics query to render encoder and compute encoder (g…

…puweb#797)

These query APIs do not support on render bundles.

spec/index.bs

@@ -3693,9 +3693,6 @@ interface mixin GPUProgrammablePassEncoder {
     void pushDebugGroup(USVString groupLabel);
     void popDebugGroup();
     void insertDebugMarker(USVString markerLabel);
-
-    void beginPipelineStatisticsQuery(GPUQuerySet querySet, GPUSize32 queryIndex);
-    void endPipelineStatisticsQuery(GPUQuerySet querySet, GPUSize32 queryIndex);
 };
 </script>
 
@@ -3780,6 +3777,9 @@ interface GPUComputePassEncoder {
     void dispatch(GPUSize32 x, optional GPUSize32 y = 1, optional GPUSize32 z = 1);
     void dispatchIndirect(GPUBuffer indirectBuffer, GPUSize64 indirectOffset);
 
+    void beginPipelineStatisticsQuery(GPUQuerySet querySet, GPUSize32 queryIndex);
+    void endPipelineStatisticsQuery();
+
     void endPass();
 };
 GPUComputePassEncoder includes GPUObjectBase;
@@ -3854,6 +3854,9 @@ interface GPURenderPassEncoder {
     void beginOcclusionQuery(GPUSize32 queryIndex);
     void endOcclusionQuery(GPUSize32 queryIndex);
 
+    void beginPipelineStatisticsQuery(GPUQuerySet querySet, GPUSize32 queryIndex);
+    void endPipelineStatisticsQuery();
+
     void executeBundles(sequence<GPURenderBundle> bundles);
     void endPass();
 };
@@ -4171,7 +4174,9 @@ enum GPUPipelineStatisticName {
 };
 </script>
 
-When resolving pipeline statistics query, each result is written into uint64, and the number and order of the results written to GPU buffer matches the number and order of {{GPUPipelineStatisticName}} specified in {{GPUQuerySetDescriptor/pipelineStatistics}}.
+* When resolving pipeline statistics query, each result is written into uint64, and the number and order of the results written to GPU buffer matches the number and order of {{GPUPipelineStatisticName}} specified in {{GPUQuerySetDescriptor/pipelineStatistics}}.
+
+* {{GPURenderPassEncoder/beginPipelineStatisticsQuery()}} and {{GPURenderPassEncoder/endPipelineStatisticsQuery()}} (on both {{GPUComputePassEncoder}} and {{GPURenderPassEncoder}}) cannot be nested. A pipeline statistics query must be ended before beginning another one.
 
 
 # Canvas Rendering &amp; Swap Chains # {#canvas-rendering}