Mac: implement orientation/motion shared memory data fetcher.

content/browser/device_orientation/data_fetcher_shared_memory_base_unittest.cc

Index: content/browser/device_orientation/data_fetcher_shared_memory_base_unittest.cc
diff --git a/content/browser/device_orientation/data_fetcher_shared_memory_base_unittest.cc b/content/browser/device_orientation/data_fetcher_shared_memory_base_unittest.cc
index b580872859cf68a52d5cb71d97c6899efec72f24..a2bcc43bbd7e3261530f38fa9fb88ba5c1d7ae24 100644
--- a/content/browser/device_orientation/data_fetcher_shared_memory_base_unittest.cc
+++ b/content/browser/device_orientation/data_fetcher_shared_memory_base_unittest.cc
@@ -147,18 +147,20 @@ class FakePollingDataFetcher : public FakeDataFetcher {
   virtual ~FakePollingDataFetcher() { }
 
   virtual bool Start(ConsumerType consumer_type) OVERRIDE {
+    EXPECT_TRUE(base::MessageLoop::current() == GetPollingMessageLoop());
     Init(consumer_type);
     start_.Signal();
     return true;
   }
 
   virtual bool Stop(ConsumerType consumer_type) OVERRIDE {
+    EXPECT_TRUE(base::MessageLoop::current() == GetPollingMessageLoop());
     stop_.Signal();
     return true;
   }
 
   virtual void Fetch(unsigned consumer_bitmask) OVERRIDE {
-    DCHECK(base::MessageLoop::current() == GetPollingMessageLoop());
+    EXPECT_TRUE(base::MessageLoop::current() == GetPollingMessageLoop());
 
     if (consumer_bitmask & CONSUMER_TYPE_ORIENTATION)
       UpdateOrientation();
@@ -209,7 +211,7 @@ TEST(DataFetcherSharedMemoryBaseTest, DoesStartOrientation) {
 }
 
 TEST(DataFetcherSharedMemoryBaseTest, DoesPollMotion) {
-    FakePollingDataFetcher* mock_data_fetcher =
+  FakePollingDataFetcher* mock_data_fetcher =
       new FakePollingDataFetcher();
   EXPECT_TRUE(mock_data_fetcher->IsPolling());