Convert //extensions/{common,shell} from scoped_ptr to std::unique_ptr

extensions/common/stack_frame.h

Index: extensions/common/stack_frame.h
diff --git a/extensions/common/stack_frame.h b/extensions/common/stack_frame.h
index a55b8d82863a824957fb6d39a51f441d92e221e6..96b21fa5ad5f135aabb909ee400d3de0670b4b23 100644
--- a/extensions/common/stack_frame.h
+++ b/extensions/common/stack_frame.h
@@ -7,9 +7,9 @@
 
 #include <stddef.h>
 
+#include <memory>
 #include <vector>
 
-#include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 
 namespace extensions {
@@ -24,7 +24,7 @@ struct StackFrame {
   ~StackFrame();
 
   // Construct a stack frame from a reported plain-text frame.
-  static scoped_ptr<StackFrame> CreateFromText(
+  static std::unique_ptr<StackFrame> CreateFromText(
       const base::string16& frame_text);
 
   bool operator==(const StackFrame& rhs) const;