Fixes leaks in remote_unittest. This change just replaces pointers used in remote_unittest with scoped_ptr<> to delete the memory used in the test, and replaces scoped_ptr<> in differ.h with scoped_array<> to avoid mismatched deletes.
Fixes leaks in remote_unittest.
This change just replaces pointers used in remote_unittest with scoped_ptr<> to delete the memory used in the test, and replaces scoped_ptr<> in differ.h with scoped_array<> to avoid mismatched deletes.

BUG=46678
TEST=make valgrind bots green.
Review URL: http://codereview.chromium.org/2832043

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@51493 0039d316-1c4b-4281-b951-d872f2087c98

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