Revise gamepad interface

Per API review, revision to gamepad interface. Still in _dev for now, will move to stable as separate change once we're happy with the interface.

Change summary:
- renames of various fields, and main function in idl per discussion
- timestamp to double, connected to PP_Bool
- remove #pragma pack in header, now copied member-by-member
- update examples

One complication was in removing the #pragma pack. Copying by member in webkit/plugins/ppapi/ppapi_plugin_instance.cc avoids the need to keep webkit and pepper in sync and exactly the same layout (a good thing).

However, when the native_client ppapi proxy is going between 32 and 64 the data structure ends up being a different size due to padding (all the fields are teh same sizes though). To workaround this, I added padding fields, and assert_sizes to confirm the sizes are the same on both "sides". This is similar to how PP_Point, input events, etc. get rpc'd, but perhaps there's a better way.

BUG=112879

Review URL: http://codereview.chromium.org/9405033

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@124375 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 4 insertions, 3 deletions

diff --git a/native_client_sdk/src/examples/gamepad/gamepad.cc b/native_client_sdk/src/examples/gamepad/gamepad.cc
index c288b8b..9ee653e 100644
--- a/native_client_sdk/src/examples/gamepad/gamepad.cc
+++ b/native_client_sdk/src/examples/gamepad/gamepad.cc
@@ -10,6 +10,7 @@
 #include <cmath>
 #include <cstring>
 #include <string>
+#include "ppapi/c/dev/ppb_gamepad_dev.h"
 #include "ppapi/cpp/completion_callback.h"
 #include "ppapi/cpp/var.h"
 
@@ -83,15 +84,15 @@ void Gamepad::Paint() {
   FillRect(pixel_buffer_, 0, 0, width(), height(), 0xfff0f0f0);
 
   // Get current gamepad data.
-  PP_GamepadsData_Dev gamepad_data;
-  gamepad_->SampleGamepads(pp_instance(), &gamepad_data);
+  PP_GamepadsSampleData_Dev gamepad_data;
+  gamepad_->Sample(pp_instance(), &gamepad_data);
 
   // Draw the current state for each connected gamepad.
   for (size_t p = 0; p < gamepad_data.length; ++p) {
     int width2 = width() / gamepad_data.length / 2;
     int height2 = height() / 2;
     int offset = width2 * 2 * p;
-    PP_GamepadData_Dev& pad = gamepad_data.items[p];
+    PP_GamepadSampleData_Dev& pad = gamepad_data.items[p];
 
     if (!pad.connected)
       continue;