Initial GetSample implementation.

src/profile-generator.cc

Index: src/profile-generator.cc
diff --git a/src/profile-generator.cc b/src/profile-generator.cc
index 945bdd6cc12f5ea883ea6a30a12c24f938b81de2..aa01026a7177624484b72f8686481640e26edfe4 100644
--- a/src/profile-generator.cc
+++ b/src/profile-generator.cc
@@ -628,11 +628,8 @@ void ProfileGenerator::RecordTickSample(const TickSample& sample) {
       }
     }
 
-    for (const Address* stack_pos = sample.stack,
-           *stack_end = stack_pos + sample.frames_count;
-         stack_pos != stack_end;
-         ++stack_pos) {
-      *entry++ = code_map_.FindEntry(*stack_pos);
+    for (unsigned i = 0; i < sample.frames_count; ++i) {
+      *entry++ = code_map_.FindEntry(static_cast<Address>(sample.stack[i]));
     }
   }