cc: Replace Pass() with std::move() in some subdirs.

cc/trees/layer_tree_host_pixeltest_readback.cc

 // Copyright 2013 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 "build/build_config.h"
 #include "cc/layers/solid_color_layer.h"
 #include "cc/layers/texture_layer.h"
 #include "cc/output/copy_output_request.h"
 #include "cc/output/copy_output_result.h"
 #include "cc/test/fake_picture_layer.h"
@@ skipping 65 matching lines @@
       } else {
         DCHECK_EQ(test_type_, PIXEL_TEST_GL);
         request = CopyOutputRequest::CreateRequest(
             base::Bind(&LayerTreeHostReadbackPixelTest::ReadbackResultAsTexture,
                        base::Unretained(this)));
       }
     }
 
     if (!copy_subrect_.IsEmpty())
       request->set_area(copy_subrect_);
-    return request.Pass();
+    return request;
   }
 
   void BeginTest() override {
     if (insert_copy_request_after_frame_count_ == 0) {
       Layer* const target =
           readback_target_ ? readback_target_ : layer_tree_host()->root_layer();
       target->RequestCopyOfOutput(CreateCopyOutputRequest().Pass());
     }
     PostSetNeedsCommitToMainThread();
   }
@@ skipping 21 matching lines @@
     TextureMailbox texture_mailbox;
     scoped_ptr<SingleReleaseCallback> release_callback;
     result->TakeTexture(&texture_mailbox, &release_callback);
     EXPECT_TRUE(texture_mailbox.IsValid());
     EXPECT_TRUE(texture_mailbox.IsTexture());
 
     scoped_ptr<SkBitmap> bitmap =
         CopyTextureMailboxToBitmap(result->size(), texture_mailbox);
     release_callback->Run(gpu::SyncToken(), false);
 
-    ReadbackResultAsBitmap(CopyOutputResult::CreateBitmapResult(bitmap.Pass()));
+    ReadbackResultAsBitmap(
+        CopyOutputResult::CreateBitmapResult(std::move(bitmap)));
   }
 
   ReadbackType readback_type_;
   gfx::Rect copy_subrect_;
   int insert_copy_request_after_frame_count_;
 };
 
 void IgnoreReadbackResult(scoped_ptr<CopyOutputResult> result) {
 }
 
@@ skipping 408 matching lines @@
                            READBACK_DEFAULT),
         ReadbackTestConfig(LayerTreeHostReadbackPixelTest::PIXEL_TEST_GL,
                            READBACK_DEFAULT),
         ReadbackTestConfig(LayerTreeHostReadbackPixelTest::PIXEL_TEST_GL,
                            READBACK_BITMAP)));
 
 }  // namespace
 }  // namespace cc
 
 #endif  // OS_ANDROID