Disable all the tests that are flaking more than 5% on Linux builders.

ui/views/controls/textfield/textfield_unittest.cc

 // 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 "ui/views/controls/textfield/textfield.h"
 
 #include <set>
 #include <string>
 #include <vector>
 
@@ skipping 1780 matching lines @@
   EXPECT_EQ(gfx::Range(4, 7), textfield_->GetSelectedRange());
 
   // Drag the mouse to the beginning of the textfield.
   ui::MouseEvent drag_event(ui::ET_MOUSE_DRAGGED, beginning, beginning,
                             ui::EF_LEFT_MOUSE_BUTTON, 0);
   textfield_->OnMouseDragged(drag_event);
   EXPECT_EQ(gfx::Range(7, 0), textfield_->GetSelectedRange());
 }
 
 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
-TEST_F(TextfieldTest, SelectionClipboard) {
+// flaky: http://crbug.com/396477
+TEST_F(TextfieldTest, DISABLED_SelectionClipboard) {
   InitTextfield();
   textfield_->SetText(ASCIIToUTF16("0123"));
   gfx::Point point_1(GetCursorPositionX(1), 0);
   gfx::Point point_2(GetCursorPositionX(2), 0);
   gfx::Point point_3(GetCursorPositionX(3), 0);
   gfx::Point point_4(GetCursorPositionX(4), 0);
 
   // Text selected by the mouse should be placed on the selection clipboard.
   ui::MouseEvent press(ui::ET_MOUSE_PRESSED, point_1, point_1,
                        ui::EF_LEFT_MOUSE_BUTTON, ui::EF_LEFT_MOUSE_BUTTON);
@@ skipping 204 matching lines @@
   TextfieldDestroyerController controller(textfield_);
   EXPECT_TRUE(controller.target());
 
   // Send a key to trigger OnKeyEvent().
   SendKeyEvent('X');
 
   EXPECT_FALSE(controller.target());
 }
 
 }  // namespace views