Move download messages from Renderer to Frame filter.

content/renderer/render_frame_impl_browsertest.cc

 // Copyright 2015 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 <stdint.h>
 
 #include "base/command_line.h"
 #include "base/debug/leak_annotations.h"
 #include "build/build_config.h"
 #include "content/common/frame_messages.h"
 #include "content/common/view_messages.h"
 #include "content/public/renderer/document_state.h"
 #include "content/public/test/frame_load_waiter.h"
 #include "content/public/test/render_view_test.h"
 #include "content/public/test/test_utils.h"
 #include "content/renderer/navigation_state_impl.h"
 #include "content/renderer/render_frame_impl.h"
 #include "content/renderer/render_view_impl.h"
 #include "content/test/fake_compositor_dependencies.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/platform/WebEffectiveConnectionType.h"
+#include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/platform/WebURLRequest.h"
 #include "third_party/WebKit/public/web/WebFrameOwnerProperties.h"
 #include "third_party/WebKit/public/web/WebHistoryItem.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 
+using blink::WebString;
+
 namespace {
 const int32_t kSubframeRouteId = 20;
 const int32_t kSubframeWidgetRouteId = 21;
 const int32_t kFrameProxyRouteId = 22;
 }  // namespace
 
 namespace content {
 
 // RenderFrameImplTest creates a RenderFrameImpl that is a child of the
 // main frame, and has its own RenderWidget. This behaves like an out
@@ skipping 250 matching lines @@
         GetMainRenderFrame()->GetWebFrame(), item, blink::WebStandardCommit);
     EXPECT_EQ(blink::WebEffectiveConnectionType::TypeUnknown,
               GetMainRenderFrame()->getEffectiveConnectionType());
 
     // The subframe would be deleted here after a cross-document navigation.
     // It happens to be left around in this test because this does not simulate
     // the frame detach.
   }
 }
 
+TEST_F(RenderFrameImplTest, SaveImageFromDataURL) {
+  const IPC::Message* msg1 = render_thread_->sink().GetFirstMessageMatching(
+      FrameHostMsg_SaveImageFromDataURL::ID);
+  EXPECT_FALSE(msg1);
+  render_thread_->sink().ClearMessages();
+
+  const std::string image_data_url =
+      "data:image/gif;base64,R0lGODlhAQABAIAAAAUEBAAAACwAAAAAAQABAAACAkQBADs=";
+
+  frame()->saveImageFromDataURL(WebString::fromUTF8(image_data_url));
+  ProcessPendingMessages();
+  const IPC::Message* msg2 = render_thread_->sink().GetFirstMessageMatching(
+      FrameHostMsg_SaveImageFromDataURL::ID);
+  EXPECT_TRUE(msg2);
+
+  FrameHostMsg_SaveImageFromDataURL::Param param1;
+  FrameHostMsg_SaveImageFromDataURL::Read(msg2, &param1);
+  EXPECT_EQ(std::get<2>(param1).length(), image_data_url.length());

[asanka, 2016/06/20 17:13:18]

Redundant? Here and below.

+  EXPECT_EQ(std::get<2>(param1), image_data_url);
+
+  ProcessPendingMessages();
+  render_thread_->sink().ClearMessages();
+
+  const std::string large_data_url(1024 * 1024 * 20 - 1, 'd');
+
+  frame()->saveImageFromDataURL(WebString::fromUTF8(large_data_url));
+  ProcessPendingMessages();
+  const IPC::Message* msg3 = render_thread_->sink().GetFirstMessageMatching(
+      FrameHostMsg_SaveImageFromDataURL::ID);
+  EXPECT_TRUE(msg3);
+
+  FrameHostMsg_SaveImageFromDataURL::Param param2;
+  FrameHostMsg_SaveImageFromDataURL::Read(msg3, &param2);
+  EXPECT_EQ(std::get<2>(param2).length(), large_data_url.length());
+  EXPECT_EQ(std::get<2>(param2), large_data_url);
+
+  ProcessPendingMessages();
+  render_thread_->sink().ClearMessages();
+
+  const std::string exceeded_data_url(1024 * 1024 * 20 + 1, 'd');
+
+  frame()->saveImageFromDataURL(WebString::fromUTF8(exceeded_data_url));
+  ProcessPendingMessages();
+  const IPC::Message* msg4 = render_thread_->sink().GetFirstMessageMatching(
+      FrameHostMsg_SaveImageFromDataURL::ID);
+  EXPECT_FALSE(msg4);
+}
+
 }  // namespace