[Mac] Add two missing key equivalents in Edit>Find.

"Use Selection for Find" = Cmd+E
"Jump to Selection" = Cmd+J

Bug: 868405
Change-Id: I83a6e7fdecb21b5d9e0aabd2ecb8fc4483d7a273
Reviewed-on: https://chromium-review.googlesource.com/1153142Reviewed-by: Erik Chen <erikchen@chromium.org>
Commit-Queue: Robert Sesek <rsesek@chromium.org>
Cr-Commit-Position: refs/heads/master@{#578820}

chrome/browser/ui/cocoa/main_menu_builder.mm

@@ -160,9 +160,11 @@ base::scoped_nsobject<NSMenuItem> BuildEditMenu(NSApplication* nsapp,
                       Item(IDS_EDIT_FIND_PREVIOUS_MAC)
                           .command_id(IDC_FIND_PREVIOUS),
                       Item(IDS_EDIT_USE_SELECTION_MAC)
-                          .action(@selector(copyToFindPboard:)),
+                          .action(@selector(copyToFindPboard:))
+                          .key_equivalent(@"e", NSEventModifierFlagCommand),
                       Item(IDS_EDIT_JUMP_TO_SELECTION_MAC)
-                          .action(@selector(centerSelectionInVisibleArea:)),
+                          .action(@selector(centerSelectionInVisibleArea:))
+                          .key_equivalent(@"j", NSEventModifierFlagCommand),
                 }),
                 Item(IDS_EDIT_SPELLING_GRAMMAR_MAC)
                     .tag(IDC_SPELLCHECK_MENU)