Factor out GamepadCommon base class from Gamepad and WebKitGamepad

Source/modules/gamepad/Gamepad.h

Index: Source/modules/gamepad/Gamepad.h
diff --git a/Source/modules/gamepad/Gamepad.h b/Source/modules/gamepad/Gamepad.h
index 1787b1f83d5f63f9f51d3b66a44da924078f5a65..893d4f68220bcdff62c8d7d77907ed843bcc35fe 100644
--- a/Source/modules/gamepad/Gamepad.h
+++ b/Source/modules/gamepad/Gamepad.h
@@ -29,54 +29,27 @@
 #include "bindings/v8/ScriptWrappable.h"
 #include "heap/Handle.h"
 #include "modules/gamepad/GamepadButton.h"
+#include "modules/gamepad/GamepadCommon.h"
 #include "public/platform/WebGamepad.h"
 #include "wtf/RefCounted.h"
-#include "wtf/Vector.h"
-#include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
-class Gamepad FINAL : public RefCountedWillBeGarbageCollectedFinalized<Gamepad>, public ScriptWrappable {
+class Gamepad FINAL : public GamepadCommon, public RefCountedWillBeGarbageCollectedFinalized<Gamepad>, public ScriptWrappable {

[kouhei (in TOK), 2014/03/13 09:05:11]

RefCountedWillBeGarbageCollectedFinalized must be derived first in order to get
oilpan gc to work correctly.

[Nils Barth (inactive), 2014/03/13 09:15:14]

Thanks, got it, done!

 public:
     static PassRefPtrWillBeRawPtr<Gamepad> create()
     {
         return adoptRefWillBeNoop(new Gamepad);
     }
-    ~Gamepad();
-
-    typedef Vector<float> FloatVector;
-
-    const String& id() const { return m_id; }
-    void setId(const String& id) { m_id = id; }
-
-    unsigned index() const { return m_index; }
-    void setIndex(unsigned val) { m_index = val; }
-
-    bool connected() const { return m_connected; }
-    void setConnected(bool val) { m_connected = val; }
-
-    unsigned long long timestamp() const { return m_timestamp; }
-    void setTimestamp(unsigned long long val) { m_timestamp = val; }
-
-    const String& mapping() const { return m_mapping; }
-    void setMapping(const String& val) { m_mapping = val; }
-
-    const FloatVector& axes() const { return m_axes; }
-    void setAxes(unsigned count, const float* data);
+    ~Gamepad() { }
 
     const GamepadButtonVector& buttons() const { return m_buttons; }
     void setButtons(unsigned count, const blink::WebGamepadButton* data);
 
-    void trace(Visitor*);
+    void trace(Visitor* visitor) { visitor->trace(m_buttons); }

[kouhei (in TOK), 2014/03/13 09:05:11]

write this in cpp file.

[Nils Barth (inactive), 2014/03/13 09:15:14]

ok;
is there a rule about this?
(When to inline?)

The rule of thumb I'd been following was: "inline if fits on a line".

[kouhei (in TOK), 2014/03/13 09:17:10]

IIRC the oilpan rule for trace() was write in cpp file by default, but may
inline if no cpp file exist.

[Nils Barth (inactive), 2014/03/13 09:19:52]

Thanks for explaining!

 
 private:
-    Gamepad();
-    String m_id;
-    unsigned m_index;
-    bool m_connected;
-    unsigned long long m_timestamp;
-    String m_mapping;
-    FloatVector m_axes;
+    Gamepad() { ScriptWrappable::init(this); }
     GamepadButtonVector m_buttons;
 };