Blimp: Add BlobChannelReceiver and bindings interface.

blimp/net/blob_channel/mock_blob_channel_bindings.h

Index: blimp/net/blob_channel/mock_blob_channel_bindings.h
diff --git a/blimp/net/blob_channel/mock_blob_channel_bindings.h b/blimp/net/blob_channel/mock_blob_channel_bindings.h
index 443748044de9cc7adb2568f6b4295a9e65898754..93643f850a09fb93ec265e4e7da70c134ac5a255 100644
--- a/blimp/net/blob_channel/mock_blob_channel_bindings.h
+++ b/blimp/net/blob_channel/mock_blob_channel_bindings.h
@@ -21,6 +21,15 @@ class MockBlobSenderBindings : public BlobSenderBindings {
   MOCK_METHOD2(Send, void(const std::string&, const std::vector<uint8_t>&));
 };
 
+class MockBlobReceiverBindings : public BlobReceiverBindings {
+ public:
+  MockBlobReceiverBindings();
+  ~MockBlobReceiverBindings();
+
+  MOCK_METHOD1(Get, void(const std::string&));
+  MOCK_METHOD1(SetDelegate, void(Delegate* delegate));
+};
+
 }  // namespace blimp
 
 #endif  // BLIMP_NET_BLOB_CHANNEL_MOCK_BLOB_CHANNEL_BINDINGS_H_