Add includes for unittests that appear to need them.

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@870 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/common/dwarf/dwarf2diehandler_unittest.cc

@@ -32,10 +32,16 @@
 
 // dwarf2diehander_unittest.cc: Unit tests for google_breakpad::DIEDispatcher.
 
+#include <string>
+#include <utility>
+
 #include "breakpad_googletest_includes.h"
 
 #include "common/dwarf/dwarf2diehandler.h"
 
+using std::make_pair;
+using std::string;
+
 using ::testing::_;
 using ::testing::ContainerEq;
 using ::testing::ElementsAreArray;

src/common/dwarf/dwarf2reader_cfi_unittest.cc

@@ -33,6 +33,7 @@
 
 #include <stdlib.h>
 
+#include <string>
 #include <vector>
 
 // The '.eh_frame' format, used by the Linux C++ ABI for exception
@@ -75,6 +76,7 @@ using dwarf2reader::ENDIANNESS_LITTLE;
 using dwarf2reader::ByteReader;
 using dwarf2reader::CallFrameInfo;
 
+using std::string;
 using std::vector;
 using testing::InSequence;
 using testing::Return;