Revert of Updating Blink-side WebGamepad interface

public/platform/WebGamepad.h

Index: public/platform/WebGamepad.h
diff --git a/public/platform/WebGamepad.h b/public/platform/WebGamepad.h
index db1fa1c012da5eaa2279c9f0454a9c2c530f236d..93df8a28b67adaa5022aa13843b26a0908fe5a67 100644
--- a/public/platform/WebGamepad.h
+++ b/public/platform/WebGamepad.h
@@ -34,31 +34,12 @@
 
 #pragma pack(push, 1)
 
-#if defined(ENABLE_NEW_GAMEPAD_API)
-class WebGamepadButton {
-public:
-    WebGamepadButton()
-        : pressed(false)
-        , value(0.f)
-    {
-    }
-    WebGamepadButton(bool pressed, float value)
-        : pressed(pressed)
-        , value(value)
-    {
-    }
-    bool pressed;
-    float value;
-};
-#endif
-
 // This structure is intentionally POD and fixed size so that it can be shared
 // memory between hardware polling threads and the rest of the browser. See
 // also WebGamepads.h.
 class WebGamepad {
 public:
     static const size_t idLengthCap = 128;
-    static const size_t mappingLengthCap = 16;
     static const size_t axesLengthCap = 16;
     static const size_t buttonsLengthCap = 32;
 
@@ -69,9 +50,6 @@
         , buttonsLength(0)
     {
         id[0] = 0;
-#if defined(ENABLE_NEW_GAMEPAD_API)
-        mapping[0] = 0;
-#endif
     }
 
     // Is there a gamepad connected at this index?
@@ -93,23 +71,12 @@
     // Number of valid entries in the buttons array.
     unsigned buttonsLength;
 
-#if defined(ENABLE_NEW_GAMEPAD_API)
-    // Button states
-    WebGamepadButton buttons[buttonsLengthCap];
-
-    // Mapping type (for example "standard")
-    WebUChar mapping[mappingLengthCap];
-#else
+    // Normalized values representing buttons, in the range [0..1].
     float buttons[buttonsLengthCap];
-#endif
 };
 
 #if BLINK_IMPLEMENTATION
-#if defined(ENABLE_NEW_GAMEPAD_API)
-COMPILE_ASSERT(sizeof(WebGamepad) == 529, WebGamepad_has_wrong_size);
-#else
 COMPILE_ASSERT(sizeof(WebGamepad) == 465, WebGamepad_has_wrong_size);
-#endif
 #endif
 
 #pragma pack(pop)