cc::SharedQuadState: drop CopyFrom and add copy constructor

cc/ipc/cc_param_traits_unittest.cc

 // Copyright (c) 2012 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 <stddef.h>
 #include <string.h>
 #include <algorithm>
 #include <utility>
 
 #include "base/macros.h"
@@ skipping 281 matching lines @@
   shared_state1_in->SetAll(arbitrary_matrix1, arbitrary_size1, arbitrary_rect1,
                            arbitrary_rect2, arbitrary_bool1, arbitrary_float1,
                            arbitrary_blend_mode1, arbitrary_context_id1);
 
   std::unique_ptr<RenderPass> pass_cmp = RenderPass::Create();
   pass_cmp->SetAll(root_id, arbitrary_rect1, arbitrary_rect2, arbitrary_matrix1,
                    arbitrary_bool1);
 
   SharedQuadState* shared_state1_cmp =
       pass_cmp->CreateAndAppendSharedQuadState();
-  shared_state1_cmp->CopyFrom(shared_state1_in);
+  *shared_state1_cmp = *shared_state1_in;
 
   DebugBorderDrawQuad* debugborder_in =
       pass_in->CreateAndAppendDrawQuad<DebugBorderDrawQuad>();
   debugborder_in->SetAll(shared_state1_in, arbitrary_rect3,
                          arbitrary_rect1_inside_rect3,
                          arbitrary_rect2_inside_rect3, arbitrary_bool1,
                          arbitrary_color, arbitrary_int);
   pass_cmp->CopyFromAndAppendDrawQuad(debugborder_in,
                                       debugborder_in->shared_quad_state);
 
   SharedQuadState* shared_state2_in = pass_in->CreateAndAppendSharedQuadState();
   shared_state2_in->SetAll(arbitrary_matrix2, arbitrary_size2, arbitrary_rect2,
                            arbitrary_rect3, arbitrary_bool1, arbitrary_float2,
                            arbitrary_blend_mode2, arbitrary_context_id2);
   SharedQuadState* shared_state2_cmp =
       pass_cmp->CreateAndAppendSharedQuadState();
-  shared_state2_cmp->CopyFrom(shared_state2_in);
+  *shared_state2_cmp = *shared_state2_in;
 
   RenderPassDrawQuad* renderpass_in =
       pass_in->CreateAndAppendDrawQuad<RenderPassDrawQuad>();
   renderpass_in->SetAll(
       shared_state2_in, arbitrary_rect1, arbitrary_rect2_inside_rect1,
       arbitrary_rect1_inside_rect1, arbitrary_bool1, child_id,
       arbitrary_resourceid2, arbitrary_vector2df1, arbitrary_size1,
       arbitrary_filters1, arbitrary_vector2df2, arbitrary_filters2);
   pass_cmp->CopyFromAndAppendRenderPassDrawQuad(
       renderpass_in, renderpass_in->shared_quad_state,
       renderpass_in->render_pass_id);
 
   SharedQuadState* shared_state3_in = pass_in->CreateAndAppendSharedQuadState();
   shared_state3_in->SetAll(arbitrary_matrix1, arbitrary_size3, arbitrary_rect3,
                            arbitrary_rect1, arbitrary_bool1, arbitrary_float3,
                            arbitrary_blend_mode3, arbitrary_context_id3);
   SharedQuadState* shared_state3_cmp =
       pass_cmp->CreateAndAppendSharedQuadState();
-  shared_state3_cmp->CopyFrom(shared_state3_in);
+  *shared_state3_cmp = *shared_state3_in;
 
   SolidColorDrawQuad* solidcolor_in =
       pass_in->CreateAndAppendDrawQuad<SolidColorDrawQuad>();
   solidcolor_in->SetAll(shared_state3_in, arbitrary_rect3,
                         arbitrary_rect1_inside_rect3,
                         arbitrary_rect2_inside_rect3, arbitrary_bool1,
                         arbitrary_color, arbitrary_bool2);
   pass_cmp->CopyFromAndAppendDrawQuad(solidcolor_in,
                                       solidcolor_in->shared_quad_state);
 
@@ skipping 251 matching lines @@
   EXPECT_TRUE(
       IPC::ParamTraits<DelegatedFrameData>::Read(&msg, &iter, &frame_out));
 
   ASSERT_EQ(2u, frame_out.resource_list.size());
   Compare(arbitrary_resource1, frame_out.resource_list[0]);
   Compare(arbitrary_resource2, frame_out.resource_list[1]);
 }
 
 }  // namespace
 }  // namespace content