minidump_stackwalk should use MinidumpProcessor (#64). r=bryner

- minidump_stackwalk is now much more useful as a debugging tool and
   even as a standalone tool.
 - Reimplementation of minidump_stackwalk around MinidumpProcessor.
 - minidump_stackwalk displays all pertinent information returned by
   MinidumpProcessor in the ProcessState.
 - New PathnameStripper::File static utility method to display only the
   leaf file name in a pathname, cleaning up minidump_stackwalk's output.
 - New SimpleSymbolSupplier class, which implements a simple
   filesystem-based symbol supplier compatible with the layout used by
   Microsoft Symbol Server and its client cache.
 - minidump_stackwalk now accepts an optional second argument, a pathname
   to use as a symbol directory for a SimpleSymbolSupplier.
 - Updated test data to be compatible with SimpleSymbolSupplier, and added
   test data for kernel32.pdb.  Test data converted from CRLF line endings
   to LF.

http://groups.google.com/group/airbag-dev/browse_thread/thread/cce30a84f6b2d728


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@53 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/processor/minidump_processor_unittest.cc

@@ -62,8 +62,11 @@ class TestSymbolSupplier : public SymbolSupplier {
 
 string TestSymbolSupplier::GetSymbolFile(MinidumpModule *module) {
   if (*(module->GetName()) == "c:\\test_app.exe") {
+    // The funny-looking pathname is so that the symbol file can also be
+    // reached by a SimpleSymbolSupplier.
     return string(getenv("srcdir") ? getenv("srcdir") : ".") +
-      "/src/processor/testdata/minidump2.sym";
+      "/src/processor/testdata/symbols/"
+      "test_app.pdb/63FE4780728D49379B9D7BB6460CB42A1/test_app.sym";
   }
 
   return "";