WIP: Reland CompiledScript, prototype compiling in a separate task.

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

Index: third_party/WebKit/Source/bindings/core/v8/ScriptController.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/ScriptController.cpp b/third_party/WebKit/Source/bindings/core/v8/ScriptController.cpp
index 3dcd2b077c2f8e3576d52ae23959c13850d71bfc..100ea2b8e0111e4acbca9c2e054849dc44f54128 100644
--- a/third_party/WebKit/Source/bindings/core/v8/ScriptController.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/ScriptController.cpp
@@ -32,6 +32,7 @@
 
 #include "bindings/core/v8/ScriptController.h"
 
+#include "bindings/core/v8/CompiledScript.h"
 #include "bindings/core/v8/ScriptSourceCode.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/V8Binding.h"
@@ -160,6 +161,69 @@ v8::Local<v8::Value> ScriptController::executeScriptAndReturnValue(
   return result;
 }
 
+CompiledScript* ScriptController::compileScriptInMainWorld(
+    const ScriptSourceCode& source,
+    AccessControlStatus accessControlStatus) {
+  V8CacheOptions v8CacheOptions =
+      cacheOptions(source.resource(), frame()->settings());
+
+  v8::HandleScope handleScope(isolate());
+  v8::TryCatch tryCatch(isolate());
+  tryCatch.SetVerbose(true);
+
+  v8::Local<v8::Script> script;
+  if (!v8Call(V8ScriptRunner::compileScript(
+                  source, isolate(), accessControlStatus, v8CacheOptions),
+              script, tryCatch)) {
+    return nullptr;
+  }
+
+  TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"),
+                       "UpdateCounters", TRACE_EVENT_SCOPE_THREAD, "data",
+                       InspectorUpdateCountersEvent::data());
+  DCHECK_EQ(currentExecutionContext(isolate()), frame()->document());
+  return new CompiledScript(frame()->document(), script, source);
+}
+
+void ScriptController::executeScriptInMainWorld(
+    const CompiledScript& compiledScript) {
+  Document* document = frame()->document();
+
+  TRACE_EVENT1("devtools.timeline", "EvaluateScript", "data",
+               InspectorEvaluateScriptEvent::data(
+                   frame(), compiledScript.url().getString(),
+                   compiledScript.startPosition()));
+  InspectorInstrumentation::NativeBreakpoint nativeBreakpoint(
+      document, "scriptFirstStatement");
+
+  v8::HandleScope handleScope(isolate());
+  ScriptState::Scope scope(ScriptState::forMainWorld(frame()));
+  v8::TryCatch tryCatch(isolate());
+  tryCatch.SetVerbose(true);
+
+  v8::Local<v8::Script> script = compiledScript.getScript(document);
+  if (script.IsEmpty()) {
+    CHECK(false) << "Don't do this for now";
+    // TODO(jbroman): accessControlStatus
+    AccessControlStatus accessControlStatus = NotSharableCrossOrigin;
+    CompiledScript* recompiledScript = compileScriptInMainWorld(
+        compiledScript.sourceCode(), accessControlStatus);
+    // TODO(jbroman): is this so?
+    DCHECK(recompiledScript);
+    script = recompiledScript->getScript(document);
+  }
+
+  DCHECK(!script.IsEmpty());
+  v8::Local<v8::Value> result;
+  if (!v8Call(V8ScriptRunner::runCompiledScript(isolate(), script, document),
+              result, tryCatch))
+    return;
+
+  TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"),
+                       "UpdateCounters", TRACE_EVENT_SCOPE_THREAD, "data",
+                       InspectorUpdateCountersEvent::data());
+}
+
 LocalWindowProxy* ScriptController::windowProxy(DOMWrapperWorld& world) {
   LocalWindowProxy* windowProxy = m_windowProxyManager->windowProxy(world);
   windowProxy->initializeIfNeeded();