Add the magnifier shortcut keys (Ctrl+F6/F7) for debugging.

ash/accelerators/accelerator_table.cc

Index: ash/accelerators/accelerator_table.cc
diff --git a/ash/accelerators/accelerator_table.cc b/ash/accelerators/accelerator_table.cc
index ef29cd1761a9978d9af08b0a8298746d9f083a6e..ee8772e201c8dff654ced69d4af06b33077793df 100644
--- a/ash/accelerators/accelerator_table.cc
+++ b/ash/accelerators/accelerator_table.cc
@@ -65,6 +65,9 @@ const AcceleratorData kAcceleratorData[] = {
   { true, ui::VKEY_POWER, ui::EF_NONE, POWER_PRESSED },
   { false, ui::VKEY_POWER, ui::EF_NONE, POWER_RELEASED },
 #if !defined(NDEBUG)
+  // Extra shortcut for debug build to control magnifier on linux desktop.
+  { true, ui::VKEY_F6, ui::EF_CONTROL_DOWN, MAGNIFY_SCREEN_ZOOM_OUT},
+  { true, ui::VKEY_F7, ui::EF_CONTROL_DOWN, MAGNIFY_SCREEN_ZOOM_IN},
   // Extra shortcut for debug build to activate lock screen on linux desktop.
   { true, ui::VKEY_L, ui::EF_ALT_DOWN, LOCK_SCREEN },
   // Extra shortcut for display swaping as alt-f4 is taken on linux desktop.