Allow setting a limit on the number of frames to be recovered by stack scanning.

Patch by Julian Seward <jseward@acm.org> R=ted at https://bugzilla.mozilla.org/show_bug.cgi?id=894264

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1206 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/processor/stackwalker_arm.h

@@ -69,7 +69,8 @@ class StackwalkerARM : public Stackwalker {
  private:
   // Implementation of Stackwalker, using arm context and stack conventions.
   virtual StackFrame* GetContextFrame();
-  virtual StackFrame* GetCallerFrame(const CallStack* stack);
+  virtual StackFrame* GetCallerFrame(const CallStack* stack,
+                                     bool stack_scan_allowed);
 
   // Use cfi_frame_info (derived from STACK CFI records) to construct
   // the frame that called frames.back(). The caller takes ownership