cc: Add back a benchmark category trace for counting renderer frames

cc/output/gl_renderer.cc

 // Copyright 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/output/gl_renderer.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 2879 matching lines @@
   static float gl_matrix[16];
   ToGLMatrix(&gl_matrix[0], projection_matrix * quad_rect_matrix);
   gl_->UniformMatrix4fv(matrix_location, 1, false, &gl_matrix[0]);
 
   gl_->DrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, 0);
 }
 
 void GLRenderer::SwapBuffers(std::vector<ui::LatencyInfo> latency_info) {
   DCHECK(visible_);
 
-  TRACE_EVENT0("cc,benchmark", "GLRenderer::SwapBuffers");
+  TRACE_EVENT0("cc", "GLRenderer::SwapBuffers");
   // We're done! Time to swapbuffers!
 
   gfx::Size surface_size = surface_size_for_swap_buffers();
 
   OutputSurfaceFrame output_frame;
   output_frame.latency_info = std::move(latency_info);
   output_frame.size = surface_size;
   if (use_partial_swap_) {
     // If supported, we can save significant bandwidth by only swapping the
     // damaged/scissored region (clamped to the viewport).
@@ skipping 1133 matching lines @@
 
   gl_->ScheduleCALayerSharedStateCHROMIUM(
       ca_layer_overlay->shared_state->opacity, is_clipped, clip_rect,
       sorting_context_id, gl_transform);
   gl_->ScheduleCALayerCHROMIUM(
       texture_id, contents_rect, ca_layer_overlay->background_color,
       ca_layer_overlay->edge_aa_mask, bounds_rect, filter);
 }
 
 }  // namespace cc