Track the cost of impl-side painting.

cc/tile_manager.cc

Index: cc/tile_manager.cc
===================================================================
--- cc/tile_manager.cc	(revision 170195)
+++ cc/tile_manager.cc	(working copy)
@@ -10,6 +10,7 @@
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/threading/sequenced_worker_pool.h"
+#include "cc/rendering_stats.h"
 #include "cc/resource_pool.h"
 #include "cc/tile.h"
 #include "third_party/skia/include/core/SkDevice.h"
@@ -62,7 +63,8 @@
       manage_tiles_pending_(false),
       pending_raster_tasks_(0),
       worker_pool_(new base::SequencedWorkerPool(kMaxRasterThreads,
-                                                 kRasterThreadNamePrefix)) {
+                                                 kRasterThreadNamePrefix)),
+      rasterize_time_in_seconds_(0) {
 }
 
 TileManager::~TileManager() {
@@ -215,6 +217,12 @@
   DispatchMoreRasterTasks();
 }
 
+void TileManager::renderingStats(RenderingStats* stats) {
+    stats->totalRasterizeTimeInSeconds += rasterize_time_in_seconds_;
+    rasterize_time_in_seconds_ = 0;

[nduca, 2012/11/29 18:16:30]

we also need number of pixels rasterized

[Tom Hudson, 2012/11/29 20:30:31]

Done.

+}
+
+
 void TileManager::AssignGpuMemoryToTiles() {
   TRACE_EVENT0("cc", "TileManager::AssignGpuMemoryToTiles");
   // Some memory cannot be released. Figure out which.
@@ -322,6 +330,8 @@
   TRACE_EVENT0("cc", "TileManager::OnRasterTaskCompleted");
   --pending_raster_tasks_;
 
+  rasterize_time_in_seconds_ += cloned_picture_pile->rasterizeTime();
+
   // Release raster resources.
   resource_pool_->resource_provider()->unmapPixelBuffer(resource_id);