Add plumbing for testing API for MockWebDeviceMotionHandler injection.

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 12dfa0a49a0bd9006dbbc43eddd3eb8abdd55620..e8e578b28b981b284266f17b7fdf93d4b603d510 100644
--- a/content/renderer/renderer_webkitplatformsupport_impl.cc
+++ b/content/renderer/renderer_webkitplatformsupport_impl.cc
@@ -39,6 +39,7 @@
 #include "media/audio/audio_output_device.h"
 #include "media/base/audio_hardware_config.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebBlobRegistry.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebDeviceMotionListener.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebFileInfo.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebGamepads.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebHyphenator.h"
@@ -82,6 +83,7 @@
 
 using WebKit::WebAudioDevice;
 using WebKit::WebBlobRegistry;
+using WebKit::WebDeviceMotionListener;
 using WebKit::WebFileInfo;
 using WebKit::WebFileSystem;
 using WebKit::WebFrame;
@@ -103,6 +105,9 @@ static bool g_sandbox_enabled = true;
 base::LazyInstance<WebGamepads>::Leaky g_test_gamepads =
     LAZY_INSTANCE_INITIALIZER;
 
+base::LazyInstance<scoped_ptr<WebDeviceMotionListener> > g_test_device_motion =
+    LAZY_INSTANCE_INITIALIZER;
+
 //------------------------------------------------------------------------------
 
 class RendererWebKitPlatformSupportImpl::MimeRegistry
@@ -923,4 +928,22 @@ WebKit::WebGraphicsContext3DProvider* RendererWebKitPlatformSupportImpl::
       shared_offscreen_context_);
 }
 
+//------------------------------------------------------------------------------
+
+void RendererWebKitPlatformSupportImpl::setDeviceMotionListener(
+    WebKit::WebDeviceMotionListener* listener) {
+  if (g_test_device_motion.Get().get() == 0) {
+    // TODO(timvolodine) provide implementation and instantiation of the
+    // event pump.
+  } else {
+    g_test_device_motion.Get()->setListener(listener);
+  }
+}
+
+// static
+void RendererWebKitPlatformSupportImpl::SetMockDeviceMotionListenerForTesting(
+    WebDeviceMotionListener* listener) {
+  g_test_device_motion.Get().reset(listener);
+}
+
 }  // namespace content