Defer media loading while on cellular networks.

third_party/WebKit/Source/core/page/NetworkStateNotifier.cpp

Index: third_party/WebKit/Source/core/page/NetworkStateNotifier.cpp
diff --git a/third_party/WebKit/Source/core/page/NetworkStateNotifier.cpp b/third_party/WebKit/Source/core/page/NetworkStateNotifier.cpp
index 74a6124771ef1daadb8a28fde97b00f77cebe9f6..69508f46f6e60641c8f828d7d872376003c573e3 100644
--- a/third_party/WebKit/Source/core/page/NetworkStateNotifier.cpp
+++ b/third_party/WebKit/Source/core/page/NetworkStateNotifier.cpp
@@ -104,6 +104,14 @@ void NetworkStateNotifier::removeObserver(NetworkStateObserver* observer, Execut
 void NetworkStateNotifier::setTestUpdatesOnly(bool updatesOnly)
 {
     ASSERT(isMainThread());
+
+    // Reset state to default when entering or leaving test mode.
+    if (updatesOnly || m_testUpdatesOnly) {
+        m_isOnLine = true;
+        m_type = WebConnectionTypeOther;
+        m_maxBandwidthMbps = std::numeric_limits<double>::infinity();
+    }
+
     m_testUpdatesOnly = updatesOnly;
 }