Gamepad API: add support for connection events

content/browser/renderer_host/pepper/pepper_gamepad_host.h

Index: content/browser/renderer_host/pepper/pepper_gamepad_host.h
diff --git a/content/browser/renderer_host/pepper/pepper_gamepad_host.h b/content/browser/renderer_host/pepper/pepper_gamepad_host.h
index 1db73aa694a5ebbfba38f200bc2b84cc268f0a3e..b4dc8c7dea1a3e5dc0621e64b0a7b6c611fe0595 100644
--- a/content/browser/renderer_host/pepper/pepper_gamepad_host.h
+++ b/content/browser/renderer_host/pepper/pepper_gamepad_host.h
@@ -7,6 +7,7 @@
 
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
+#include "content/browser/gamepad/gamepad_consumer.h"
 #include "content/common/content_export.h"
 #include "ppapi/host/resource_host.h"
 
@@ -21,7 +22,9 @@ namespace content {
 class BrowserPpapiHost;
 class GamepadService;
 
-class CONTENT_EXPORT PepperGamepadHost : public ppapi::host::ResourceHost {
+class CONTENT_EXPORT PepperGamepadHost :
+    public ppapi::host::ResourceHost,
+    public GamepadConsumer {

[jam, 2014/05/05 21:19:09]

so you derived from this but don't need to implement any of its methods?

[kbalazs, 2014/05/06 22:20:34]

It needs to derive because GamepadService now holds GamepadConsumer pointers. I
have no clue whether the pepper thing needs the connection events but this is
not in the scope of the change. Now I made GamepadConsumer's methods pure
virtual and override them here with emtpy implementation, so it is clearer.

  public:
   PepperGamepadHost(BrowserPpapiHost* host,
                     PP_Instance instance,