ProcessSingleton now uses base::win::MessageWindow to create a message-only window.

Collateral changes:
- base::win::MessageWindow registes a single window class used by all message-only windows it creates. The class is registered via base::LazyInstance.
- Added base::win::MessageWindow::FindWindow() wrapper used to find other message-only windows, including the other created by a different process.
- Removed chrome::kMessageWindowClass constant.
- chrome_frame_test::ContextMenuTest destroys the clipboard during the test teardown.

Review URL: https://chromiumcodereview.appspot.com/18348025

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@211049 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 13 insertions, 0 deletions

diff --git a/chrome_frame/test/chrome_frame_test_utils.cc b/chrome_frame/test/chrome_frame_test_utils.cc
index 80db1b3..c3c5d4c 100644
--- a/chrome_frame/test/chrome_frame_test_utils.cc
+++ b/chrome_frame/test/chrome_frame_test_utils.cc
@@ -532,6 +532,10 @@ std::wstring GetClipboardText() {
   return UTF16ToWide(text16);
 }
 
+void DestroyClipboard() {
+  ui::Clipboard::DestroyClipboardForCurrentThread();
+}
+
 void SetClipboardText(const std::wstring& text) {
   ui::ScopedClipboardWriter clipboard_writer(
       ui::Clipboard::GetForCurrentThread(),
diff --git a/chrome_frame/test/chrome_frame_test_utils.h b/chrome_frame/test/chrome_frame_test_utils.h
index f0d499f..8960ac6 100644
--- a/chrome_frame/test/chrome_frame_test_utils.h
+++ b/chrome_frame/test/chrome_frame_test_utils.h
@@ -303,6 +303,10 @@ bool AddCFMetaTag(std::string* html_data);
 // Get text data from the clipboard.
 std::wstring GetClipboardText();
 
+// Destroys the clipboard for the current thread. This function must be called
+// if GetClipboardText() or SetClipboardText() have been invoked.
+void DestroyClipboard();
+
 // Puts the given text data on the clipboard. All previous items on the
 // clipboard are removed.
 void SetClipboardText(const std::wstring& text);
diff --git a/chrome_frame/test/ui_test.cc b/chrome_frame/test/ui_test.cc
index 11b270a..f44fec1 100644
--- a/chrome_frame/test/ui_test.cc
+++ b/chrome_frame/test/ui_test.cc
@@ -470,6 +470,11 @@ class ContextMenuTest : public MockIEEventSinkTest, public testing::Test {
     EXPECT_CALL(acc_observer_, OnAccDocLoad(_)).Times(testing::AnyNumber());
   }
 
+  virtual void TearDown() {
+    // Destroy the clipboard here because it is not destroyed automatically.
+    DestroyClipboard();
+  }
+
   // Common helper function for "Save xxx As" tests.
   void DoSaveAsTest(const wchar_t* role, const wchar_t* menu_item_name,
                     const wchar_t* file_ext) {