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/stackwalker_x86.h

@@ -40,11 +40,13 @@ class StackwalkerX86 : public Stackwalker {
  public:
   // context is a MinidumpContext object that gives access to x86-specific
   // register state corresponding to the innermost called frame to be
-  // included in the stack.  memory and modules are passed directly through
+  // included in the stack.  The other arguments are passed directly through
   // to the base Stackwalker constructor.
   StackwalkerX86(MinidumpContext*    context,
                  MemoryRegion*       memory,
-                 MinidumpModuleList* modules);
+                 MinidumpModuleList* modules,
+                 SymbolSupplier*     supplier,
+                 const CrashReport*  report);
 
  private:
   // Implementation of Stackwalker, using x86 context (%ebp, %eip) and