Extend the TestRunner so that the manifest-src CSP directive can be tested from layout tests.

content/shell/renderer/test_runner/test_runner.cc

Index: content/shell/renderer/test_runner/test_runner.cc
diff --git a/content/shell/renderer/test_runner/test_runner.cc b/content/shell/renderer/test_runner/test_runner.cc
index 201b4da93b23d0f1e3a3001d468e4e47cce3c7e2..00c55719db9da76513b3b9c0694751393a5480fe 100644
--- a/content/shell/renderer/test_runner/test_runner.cc
+++ b/content/shell/renderer/test_runner/test_runner.cc
@@ -7,6 +7,7 @@
 #include <limits>
 
 #include "base/logging.h"
+#include "content/public/test/layouttest_support.h"
 #include "content/shell/common/test_runner/test_preferences.h"
 #include "content/shell/renderer/binding_helpers.h"
 #include "content/shell/renderer/test_runner/WebTestDelegate.h"
@@ -286,6 +287,7 @@ class TestRunnerBindings : public gin::Wrappable<TestRunnerBindings> {
   void RemoveWebPageOverlay();
   void DisplayAsync();
   void DisplayAsyncThen(v8::Handle<v8::Function> callback);
+  void GetManifestThen(v8::Handle<v8::Function> callback);
   void CapturePixelsAsyncThen(v8::Handle<v8::Function> callback);
   void CopyImageAtAndCapturePixelsAsyncThen(int x,
                                             int y,
@@ -526,6 +528,7 @@ gin::ObjectTemplateBuilder TestRunnerBindings::GetObjectTemplateBuilder(
                  &TestRunnerBindings::RemoveWebPageOverlay)
       .SetMethod("displayAsync", &TestRunnerBindings::DisplayAsync)
       .SetMethod("displayAsyncThen", &TestRunnerBindings::DisplayAsyncThen)
+      .SetMethod("getManifestThen", &TestRunnerBindings::GetManifestThen)
       .SetMethod("capturePixelsAsyncThen",
                  &TestRunnerBindings::CapturePixelsAsyncThen)
       .SetMethod("copyImageAtAndCapturePixelsAsyncThen",
@@ -1358,6 +1361,11 @@ void TestRunnerBindings::DisplayAsyncThen(v8::Handle<v8::Function> callback) {
     runner_->DisplayAsyncThen(callback);
 }
 
+void TestRunnerBindings::GetManifestThen(v8::Handle<v8::Function> callback) {
+  if (runner_)
+    runner_->GetManifestThen(callback);
+}
+
 void TestRunnerBindings::CapturePixelsAsyncThen(
     v8::Handle<v8::Function> callback) {
   if (runner_)
@@ -2804,6 +2812,16 @@ void TestRunner::DisplayAsyncThen(v8::Handle<v8::Function> callback) {
                                       base::Passed(&task)));
 }
 
+void TestRunner::GetManifestThen(v8::Handle<v8::Function> callback) {
+  scoped_ptr<InvokeCallbackTask> task(
+      new InvokeCallbackTask(this, callback));
+
+  FetchManifest(web_view_, web_view_->mainFrame()->document().manifestURL(),
+      base::Bind(&TestRunner::GetManifestCallback,
+                 base::Unretained(this),
+                 base::Passed(&task)));
+}
+
 void TestRunner::CapturePixelsAsyncThen(v8::Handle<v8::Function> callback) {
   scoped_ptr<InvokeCallbackTask> task(
       new InvokeCallbackTask(this, callback));
@@ -2822,6 +2840,12 @@ void TestRunner::CopyImageAtAndCapturePixelsAsyncThen(
                        base::Passed(&task)));
 }
 
+void TestRunner::GetManifestCallback(scoped_ptr<InvokeCallbackTask> task,
+                                     const blink::WebURLResponse& response,
+                                     const std::string& data) {
+  InvokeCallback(task.Pass());
+}
+
 void TestRunner::CapturePixelsCallback(scoped_ptr<InvokeCallbackTask> task,
                                        const SkBitmap& snapshot) {
   v8::Isolate* isolate = blink::mainThreadIsolate();