Add support to the StackWalker for resolving symbols, using a

caller-implemented SymbolSupplier object to get a symbol file.

Add a CrashReportProcessor object which provides a simple API for processing
a CrashReport struct, given a SymbolSupplier and a minidump file.

r=mmentovai (#17))


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@18 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/processor/testdata/test_app.cc

@@ -0,0 +1,45 @@
+// This file is used to generate minidump2.dmp and minidump2.sym.
+// cl /Zi /Fetest_app.exe test_app.cc dbghelp.lib
+// Then run test_app to generate a dump, and dump_syms to create the .sym file.
+
+#include <windows.h>
+#include <dbghelp.h>
+
+static LONG HandleException(EXCEPTION_POINTERS *exinfo) {
+  HANDLE dump_file = CreateFile("dump.dmp",
+                                GENERIC_WRITE,
+                                FILE_SHARE_WRITE,
+                                NULL,
+                                CREATE_ALWAYS,
+                                FILE_ATTRIBUTE_NORMAL,
+                                NULL);
+
+  MINIDUMP_EXCEPTION_INFORMATION except_info;
+  except_info.ThreadId = GetCurrentThreadId();
+  except_info.ExceptionPointers = exinfo;
+  except_info.ClientPointers = false;
+  
+  MiniDumpWriteDump(GetCurrentProcess(),
+                    GetCurrentProcessId(),
+                    dump_file,
+                    MiniDumpNormal,
+                    &except_info,
+                    NULL,
+                    NULL);
+
+  CloseHandle(dump_file);
+  return EXCEPTION_EXECUTE_HANDLER;
+}
+
+void CrashFunction() {
+  int *i = NULL;
+  *i = 5;  // crash!
+}
+
+int main(int argc, char *argv[]) {
+  __try {
+    CrashFunction();
+  } __except(HandleException(GetExceptionInformation())) {
+  }
+  return 0;
+}