Revert of Rewrite clipboard write IPC handling to be easier to understand.

content/browser/renderer_host/clipboard_message_filter_unittest.cc

Index: content/browser/renderer_host/clipboard_message_filter_unittest.cc
diff --git a/content/browser/renderer_host/clipboard_message_filter_unittest.cc b/content/browser/renderer_host/clipboard_message_filter_unittest.cc
deleted file mode 100644
index 70761b756d265664ab2a59adffb0a96ea26ca159..0000000000000000000000000000000000000000
--- a/content/browser/renderer_host/clipboard_message_filter_unittest.cc
+++ /dev/null
@@ -1,132 +0,0 @@
-// 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 "content/browser/renderer_host/clipboard_message_filter.h"
-
-#include <string.h>
-
-#include "base/memory/ref_counted.h"
-#include "base/process/process_handle.h"
-#include "base/run_loop.h"
-#include "content/public/test/test_browser_thread_bundle.h"
-#include "testing/gtest/include/gtest/gtest.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-#include "ui/base/test/test_clipboard.h"
-#include "ui/gfx/size.h"
-
-namespace content {
-
-class ClipboardMessageFilterTest : public ::testing::Test {
- protected:
-  ClipboardMessageFilterTest()
-      : filter_(new ClipboardMessageFilter),
-        clipboard_(ui::TestClipboard::CreateForCurrentThread()) {
-    filter_->set_peer_pid_for_testing(base::GetCurrentProcId());
-  }
-
-  virtual ~ClipboardMessageFilterTest() override {
-    ui::Clipboard::DestroyClipboardForCurrentThread();
-  }
-
-  scoped_ptr<base::SharedMemory> CreateAndMapReadOnlySharedMemory(size_t size) {
-    scoped_ptr<base::SharedMemory> m = CreateReadOnlySharedMemory(size);
-    if (!m->Map(size))
-      return nullptr;
-    return m;
-  }
-
-  scoped_ptr<base::SharedMemory> CreateReadOnlySharedMemory(size_t size) {
-    scoped_ptr<base::SharedMemory> m(new base::SharedMemory());
-    base::SharedMemoryCreateOptions options;
-    options.size = size;
-    options.share_read_only = true;
-    if (!m->Create(options))
-      return nullptr;
-    return m;
-  }
-
-  void CallWriteImage(const gfx::Size& size,
-                      base::SharedMemory* shared_memory) {
-    base::SharedMemoryHandle handle;
-    ASSERT_TRUE(shared_memory->GiveReadOnlyToProcess(
-        base::GetCurrentProcessHandle(), &handle));
-    CallWriteImageDirectly(size, handle);
-  }
-
-  // Prefer to use CallWriteImage() in tests.
-  void CallWriteImageDirectly(const gfx::Size& size,
-                              base::SharedMemoryHandle handle) {
-    filter_->OnWriteImage(ui::CLIPBOARD_TYPE_COPY_PASTE, size, handle);
-  }
-
-  void CallCommitWrite() {
-    filter_->OnCommitWrite(ui::CLIPBOARD_TYPE_COPY_PASTE);
-    base::RunLoop().RunUntilIdle();
-  }
-
-  ui::Clipboard* clipboard() { return clipboard_; }
-
- private:
-  const TestBrowserThreadBundle thread_bundle_;
-  const scoped_refptr<ClipboardMessageFilter> filter_;
-  ui::Clipboard* const clipboard_;
-};
-
-// Test that it actually works.
-TEST_F(ClipboardMessageFilterTest, SimpleImage) {
-  static const uint32_t bitmap_data[] = {
-      0x33333333, 0xdddddddd, 0xeeeeeeee, 0x00000000,
-      0x88888888, 0x66666666, 0x55555555, 0xbbbbbbbb,
-      0x44444444, 0xaaaaaaaa, 0x99999999, 0x77777777,
-      0xffffffff, 0x11111111, 0x22222222, 0xcccccccc,
-  };
-
-  scoped_ptr<base::SharedMemory> shared_memory =
-      CreateAndMapReadOnlySharedMemory(sizeof(bitmap_data));
-  memcpy(shared_memory->memory(), bitmap_data, sizeof(bitmap_data));
-
-  CallWriteImage(gfx::Size(4, 4), shared_memory.get());
-  uint64_t sequence_number =
-      clipboard()->GetSequenceNumber(ui::CLIPBOARD_TYPE_COPY_PASTE);
-  CallCommitWrite();
-
-  EXPECT_NE(sequence_number,
-            clipboard()->GetSequenceNumber(ui::CLIPBOARD_TYPE_COPY_PASTE));
-  EXPECT_FALSE(clipboard()->IsFormatAvailable(
-      ui::Clipboard::GetPlainTextFormatType(), ui::CLIPBOARD_TYPE_COPY_PASTE));
-  EXPECT_TRUE(clipboard()->IsFormatAvailable(
-      ui::Clipboard::GetBitmapFormatType(), ui::CLIPBOARD_TYPE_COPY_PASTE));
-
-  SkBitmap actual = clipboard()->ReadImage(ui::CLIPBOARD_TYPE_COPY_PASTE);
-  SkAutoLockPixels locked(actual);
-  EXPECT_EQ(sizeof(bitmap_data), actual.getSize());
-  EXPECT_EQ(0,
-            memcmp(bitmap_data, actual.getAddr32(0, 0), sizeof(bitmap_data)));
-}
-
-// Test with a size that would overflow a naive 32-bit row bytes calculation.
-TEST_F(ClipboardMessageFilterTest, ImageSizeOverflows32BitRowBytes) {
-  scoped_ptr<base::SharedMemory> shared_memory =
-      CreateReadOnlySharedMemory(0x20000000);
-
-  CallWriteImage(gfx::Size(0x20000000, 1), shared_memory.get());
-  uint64_t sequence_number =
-      clipboard()->GetSequenceNumber(ui::CLIPBOARD_TYPE_COPY_PASTE);
-  CallCommitWrite();
-
-  EXPECT_EQ(sequence_number,
-            clipboard()->GetSequenceNumber(ui::CLIPBOARD_TYPE_COPY_PASTE));
-}
-
-TEST_F(ClipboardMessageFilterTest, InvalidSharedMemoryHandle) {
-  CallWriteImageDirectly(gfx::Size(5, 5), base::SharedMemory::NULLHandle());
-  uint64_t sequence_number =
-      clipboard()->GetSequenceNumber(ui::CLIPBOARD_TYPE_COPY_PASTE);
-  CallCommitWrite();
-
-  EXPECT_EQ(sequence_number,
-            clipboard()->GetSequenceNumber(ui::CLIPBOARD_TYPE_COPY_PASTE));
-}
-
-}  // namespace content