Clear cache before running the test

third_party/WebKit/LayoutTests/http/tests/inspector/network-test.js

Index: third_party/WebKit/LayoutTests/http/tests/inspector/network-test.js
diff --git a/third_party/WebKit/LayoutTests/http/tests/inspector/network-test.js b/third_party/WebKit/LayoutTests/http/tests/inspector/network-test.js
index 470d3d7a49d77328ae916923e13293be9f64bfc7..d36ed1b593594b60da396c8b1ba2d113398062ff 100644
--- a/third_party/WebKit/LayoutTests/http/tests/inspector/network-test.js
+++ b/third_party/WebKit/LayoutTests/http/tests/inspector/network-test.js
@@ -48,6 +48,18 @@ function makeFetch(url, requestInitializer)
     return fetch(url, requestInitializer).catch(e => e);
 }
 
+function onCacheStorageError(e)
+{
+    console.error("CacheStorage error: " + e);
+}
+
+function clearAllCaches()
+{
+    return caches.keys()
+        .then((keys) => Promise.all(keys.map((key) => caches.delete(key))))

[allada, 2016/12/15 19:01:49]

I see you pulled this from
http/tests/inspector/cache-storage/cache-storage-test.js, however I believe this
is for the cache storage api not the browser cache.

+        .catch(onCacheStorageError.bind(this));
+}
+
 var initialize_NetworkTest = function() {
 
 InspectorTest.preloadPanel("network");
@@ -120,6 +132,11 @@ InspectorTest.makeFetch = function(url, requestInitializer, callback)
     InspectorTest.callFunctionInPageAsync("makeFetch", [url, requestInitializer]).then(callback);
 }
 
+InspectorTest.clearAllCaches = function()
+{
+    return InspectorTest.evaluateInPage("clearAllCaches");
+}
+
 InspectorTest.HARPropertyFormatters = {
     bodySize: "formatAsTypeName",
     compression: "formatAsTypeName",