Add plumbing for platform based Device Motion testing.

webkit/support/test_webkit_platform_support.cc

Index: webkit/support/test_webkit_platform_support.cc
diff --git a/webkit/support/test_webkit_platform_support.cc b/webkit/support/test_webkit_platform_support.cc
index 39d8f6535257e71a84dd747d564306793094fc1b..010972a9f68587fcb1f2bb4cf58b17f3cfacd0ba 100644
--- a/webkit/support/test_webkit_platform_support.cc
+++ b/webkit/support/test_webkit_platform_support.cc
@@ -355,6 +355,11 @@ void TestWebKitPlatformSupport::setGamepadData(
   gamepad_data_ = data;
 }
 
+void TestWebKitPlatformSupport::setDeviceMotionData(
+    const WebKit::WebDeviceMotionData& data) {
+  device_motion_data_ = data;

[jochen (gone - plz use gerrit), 2013/07/15 13:55:08]

unless you intend to use this in webkit unit tests, you don't need to modify the
webkit/support files

[timvolodine, 2013/07/16 11:53:44]

Done.

+}
+
 void TestWebKitPlatformSupport::GetPlugins(
     bool refresh, std::vector<webkit::WebPluginInfo>* plugins) {
   if (refresh)