Add plumbing for platform based Device Motion testing.

content/renderer/renderer_webkitplatformsupport_impl.cc

Index: content/renderer/renderer_webkitplatformsupport_impl.cc
diff --git a/content/renderer/renderer_webkitplatformsupport_impl.cc b/content/renderer/renderer_webkitplatformsupport_impl.cc
index 388fb92322c0d01c10430136f3e48622bc51b9aa..3d2562fa9580f48c19fc90b53d357c91354b0dc3 100644
--- a/content/renderer/renderer_webkitplatformsupport_impl.cc
+++ b/content/renderer/renderer_webkitplatformsupport_impl.cc
@@ -48,6 +48,7 @@
 #include "net/base/mime_util.h"
 #include "net/base/net_util.h"
 #include "third_party/WebKit/public/platform/WebBlobRegistry.h"
+#include "third_party/WebKit/public/platform/WebDeviceMotionListener.h"
 #include "third_party/WebKit/public/platform/WebFileInfo.h"
 #include "third_party/WebKit/public/platform/WebGamepads.h"
 #include "third_party/WebKit/public/platform/WebHyphenator.h"
@@ -117,6 +118,8 @@ namespace content {
 static bool g_sandbox_enabled = true;
 base::LazyInstance<WebGamepads>::Leaky g_test_gamepads =
     LAZY_INSTANCE_INITIALIZER;
+base::LazyInstance<WebKit::WebDeviceMotionData>::Leaky
+    g_test_device_motion_data = LAZY_INSTANCE_INITIALIZER;
 
 //------------------------------------------------------------------------------
 
@@ -1059,11 +1062,25 @@ WebKit::WebString RendererWebKitPlatformSupportImpl::convertIDNToUnicode(
 
 void RendererWebKitPlatformSupportImpl::setDeviceMotionListener(
     WebKit::WebDeviceMotionListener* listener) {
-  if (!device_motion_event_pump_) {
-    device_motion_event_pump_.reset(new DeviceMotionEventPump);
-    device_motion_event_pump_->Attach(RenderThreadImpl::current());
+  if (g_test_device_motion_data == 0) {
+    if (!device_motion_event_pump_) {
+      device_motion_event_pump_.reset(new DeviceMotionEventPump);
+      device_motion_event_pump_->Attach(RenderThreadImpl::current());
+    }
+    device_motion_event_pump_->SetListener(listener);
+  } else {
+    base::MessageLoopProxy::current()->PostTask(
+        FROM_HERE,
+        base::Bind(&WebKit::WebDeviceMotionListener::didChangeDeviceMotion,
+                   base::Unretained(listener),
+                   g_test_device_motion_data.Get()));
   }
-  device_motion_event_pump_->SetListener(listener);
+}
+
+// static
+void RendererWebKitPlatformSupportImpl::SetMockDeviceMotionDataForTesting(
+    const WebKit::WebDeviceMotionData& data) {
+  g_test_device_motion_data.Get() = data;
 }
 
 }  // namespace content