Revert "Do not consume Shift+Alt in Ash to make Chromoting happy."

ash/accelerators/accelerator_controller_unittest.cc

Index: ash/accelerators/accelerator_controller_unittest.cc
diff --git a/ash/accelerators/accelerator_controller_unittest.cc b/ash/accelerators/accelerator_controller_unittest.cc
index 6b955f27e3c5a13ac3c57fece69160b03c56d9a8..377d4ee0439dfe44488e4212b7702d66f596df8e 100644
--- a/ash/accelerators/accelerator_controller_unittest.cc
+++ b/ash/accelerators/accelerator_controller_unittest.cc
@@ -719,10 +719,10 @@ TEST_F(AcceleratorControllerTest, ImeGlobalAccelerators) {
         scoped_ptr<ImeControlDelegate>(delegate).Pass());
     EXPECT_EQ(0, delegate->handle_next_ime_count());
     EXPECT_FALSE(GetController()->Process(shift_alt_press));
-    EXPECT_FALSE(GetController()->Process(shift_alt));  // crbug.com/123720
+    EXPECT_TRUE(GetController()->Process(shift_alt));
     EXPECT_EQ(1, delegate->handle_next_ime_count());
     EXPECT_FALSE(GetController()->Process(alt_shift_press));
-    EXPECT_FALSE(GetController()->Process(alt_shift));  // crbug.com/123720
+    EXPECT_TRUE(GetController()->Process(alt_shift));
     EXPECT_EQ(2, delegate->handle_next_ime_count());
 
     // We should NOT switch IME when e.g. Shift+Alt+X is pressed and X is