[#2] Pass gfx structs by const ref (gfx::Rect, gfx::RectF)

cc/quads/render_pass.cc

 // Copyright 2011 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/quads/render_pass.h"
 
 #include "base/values.h"
 #include "cc/base/math_util.h"
 #include "cc/debug/traced_value.h"
 #include "cc/output/copy_output_request.h"
@@ skipping 94 matching lines @@
       } else {
         copy_pass->quad_list.push_back(source->quad_list[i]->Copy(
             copy_pass->shared_quad_state_list[sqs_i]));
       }
     }
     out->push_back(copy_pass.Pass());
   }
 }
 
 void RenderPass::SetNew(Id id,
-                        gfx::Rect output_rect,
-                        gfx::RectF damage_rect,
+                        const gfx::Rect& output_rect,
+                        const gfx::RectF& damage_rect,
                         const gfx::Transform& transform_to_root_target) {
   DCHECK_GT(id.layer_id, 0);
   DCHECK_GE(id.index, 0);
 
   this->id = id;
   this->output_rect = output_rect;
   this->damage_rect = damage_rect;
   this->transform_to_root_target = transform_to_root_target;
 
   DCHECK(quad_list.empty());
   DCHECK(shared_quad_state_list.empty());
 }
 
 void RenderPass::SetAll(Id id,
-                        gfx::Rect output_rect,
-                        gfx::RectF damage_rect,
+                        const gfx::Rect& output_rect,
+                        const gfx::RectF& damage_rect,
                         const gfx::Transform& transform_to_root_target,
                         bool has_transparent_background) {
   DCHECK_GT(id.layer_id, 0);
   DCHECK_GE(id.index, 0);
 
   this->id = id;
   this->output_rect = output_rect;
   this->damage_rect = damage_rect;
   this->transform_to_root_target = transform_to_root_target;
   this->has_transparent_background = has_transparent_background;
@@ skipping 19 matching lines @@
   }
   value->Set("quad_list", quad_list_value.release());
 
   TracedValue::MakeDictIntoImplicitSnapshotWithCategory(
       TRACE_DISABLED_BY_DEFAULT("cc.debug.quads"),
       value.get(), "cc::RenderPass", id.AsTracingId());
   return value.PassAs<base::Value>();
 }
 
 }  // namespace cc