Fix clang-tidy performance warnings.
* Use const reference parameter type to avoid unnecessary copy. Bug: 30407689 Change-Id: Iefab05c077367f272abf545036b853e8a295c8cd Test: build with WITH_TIDY=1
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@ -92,7 +92,7 @@ debug_printf(const char* format, ...)
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// Escape the filename so that it can be added to the makefile properly.
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// Escape the filename so that it can be added to the makefile properly.
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static string
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static string
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escape_filename(const string name)
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escape_filename(const string& name)
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{
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{
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ostringstream new_name;
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ostringstream new_name;
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for (string::const_iterator iter = name.begin(); iter != name.end(); ++iter)
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for (string::const_iterator iter = name.begin(); iter != name.end(); ++iter)
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