Reland of Split PendingScript into PendingScript and ClassicPendingScript

third_party/WebKit/Source/bindings/core/v8/ScriptStreamer.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "bindings/core/v8/ScriptStreamer.h"
 
 #include <memory>
 #include "bindings/core/v8/ScriptStreamerThread.h"
 #include "bindings/core/v8/V8ScriptRunner.h"
+#include "core/dom/ClassicPendingScript.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
-#include "core/dom/PendingScript.h"
 #include "core/frame/Settings.h"
 #include "core/html/parser/TextResourceDecoder.h"
 #include "core/loader/resource/ScriptResource.h"
 #include "platform/CrossThreadFunctional.h"
 #include "platform/Histogram.h"
 #include "platform/SharedBuffer.h"
 #include "platform/instrumentation/tracing/TraceEvent.h"
 #include "platform/loader/fetch/CachedMetadata.h"
 #include "platform/wtf/Deque.h"
 #include "platform/wtf/PtrUtil.h"
@@ skipping 292 matching lines @@
   //   bookmarkPosition: position of the bookmark.
   SourceStreamDataQueue m_dataQueue;  // Thread safe.
   size_t m_queueLeadPosition;         // Only used by v8 thread.
   size_t m_queueTailPosition;  // Used by both threads; guarded by m_mutex.
 
   RefPtr<WebTaskRunner> m_loadingTaskRunner;
 };
 
 size_t ScriptStreamer::s_smallScriptThreshold = 30 * 1024;
 
-void ScriptStreamer::startStreaming(PendingScript* script,
+void ScriptStreamer::startStreaming(ClassicPendingScript* script,
                                     Type scriptType,
                                     Settings* settings,
                                     ScriptState* scriptState,
                                     RefPtr<WebTaskRunner> loadingTaskRunner) {
   // We don't yet know whether the script will really be streamed. E.g.,
   // suppressing streaming for short scripts is done later. Record only the
   // sure negative cases here.
   bool startedStreaming = startStreamingInternal(
       script, scriptType, settings, scriptState, std::move(loadingTaskRunner));
   if (!startedStreaming)
@@ skipping 168 matching lines @@
     suppressStreaming();
   }
   if (m_stream)
     m_stream->didFinishLoading();
   m_loadingFinished = true;
 
   notifyFinishedToClient();
 }
 
 ScriptStreamer::ScriptStreamer(
-    PendingScript* script,
+    ClassicPendingScript* script,
     Type scriptType,
     ScriptState* scriptState,
     v8::ScriptCompiler::CompileOptions compileOptions,
     RefPtr<WebTaskRunner> loadingTaskRunner)
     : m_pendingScript(script),
       m_resource(script->resource()),
       m_detached(false),
       m_stream(0),
       m_loadingFinished(false),
       m_parsingFinished(false),
@@ skipping 43 matching lines @@
   // parse error, the V8 side can complete before loading has finished. Send
   // the notification after both loading and V8 side operations have
   // completed.
   if (!isFinished())
     return;
 
   m_pendingScript->streamingFinished();
 }
 
 bool ScriptStreamer::startStreamingInternal(
-    PendingScript* script,
+    ClassicPendingScript* script,
     Type scriptType,
     Settings* settings,
     ScriptState* scriptState,
     RefPtr<WebTaskRunner> loadingTaskRunner) {
   DCHECK(isMainThread());
   DCHECK(scriptState->contextIsValid());
   ScriptResource* resource = script->resource();
   if (resource->isLoaded()) {
     recordNotStreamingReasonHistogram(scriptType, AlreadyLoaded);
     return false;
   }
   if (!resource->url().protocolIsInHTTPFamily()) {
     recordNotStreamingReasonHistogram(scriptType, NotHTTP);
     return false;
   }
   if (resource->isCacheValidator()) {
     recordNotStreamingReasonHistogram(scriptType, Reload);
     // This happens e.g., during reloads. We're actually not going to load
-    // the current Resource of the PendingScript but switch to another
+    // the current Resource of the ClassicPendingScript but switch to another
     // Resource -> don't stream.
     return false;
   }
   // We cannot filter out short scripts, even if we wait for the HTTP headers
   // to arrive: the Content-Length HTTP header is not sent for chunked
   // downloads.
 
   // Decide what kind of cached data we should produce while streaming. Only
   // produce parser cache if the non-streaming compile takes advantage of it.
   v8::ScriptCompiler::CompileOptions compileOption =
       v8::ScriptCompiler::kNoCompileOptions;
   if (settings->getV8CacheOptions() == V8CacheOptionsParse)
     compileOption = v8::ScriptCompiler::kProduceParserCache;
 
   // The Resource might go out of scope if the script is no longer
-  // needed. This makes PendingScript notify the ScriptStreamer when it is
-  // destroyed.
+  // needed. This makes ClassicPendingScript notify the ScriptStreamer when it
+  // is destroyed.
   script->setStreamer(ScriptStreamer::create(script, scriptType, scriptState,
                                              compileOption,
                                              std::move(loadingTaskRunner)));
 
   return true;
 }
 
 }  // namespace blink