Fix paste without style on macOS.

NSViews in Views need to implement pasteAndMatchStyle:.

The IDS_PASTE_MATCH_STYLE_MAC main menu item had the wrong key equivalent.

Bug: 882166
Change-Id: I0ba029afddaab8e155d5cfadaccadf2c231a3e79
Reviewed-on: https://chromium-review.googlesource.com/1255864
Commit-Queue: Erik Chen <erikchen@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#596280}

chrome/browser/ui/cocoa/main_menu_builder.mm

@@ -141,8 +141,7 @@ base::scoped_nsobject<NSMenuItem> BuildEditMenu(NSApplication* nsapp,
                 Item(IDS_PASTE_MATCH_STYLE_MAC)
                     .action(@selector(pasteAndMatchStyle:))
                     .is_alternate()
-                    .key_equivalent(@"v", NSEventModifierFlagCommand |
-                                              NSEventModifierFlagShift |
+                    .key_equivalent(@"V", NSEventModifierFlagCommand |
                                               NSEventModifierFlagOption),
                 Item(IDS_EDIT_DELETE_MAC)
                     .tag(IDC_CONTENT_CONTEXT_DELETE)

ui/views_bridge_mac/bridged_content_view.mm

@@ -195,6 +195,8 @@ ui::TextEditCommand GetTextEditCommandForMenuAction(SEL action) {
     return ui::TextEditCommand::COPY;
   if (action == @selector(paste:))
     return ui::TextEditCommand::PASTE;
+  if (action == @selector(pasteAndMatchStyle:))
+    return ui::TextEditCommand::PASTE;
   if (action == @selector(selectAll:))
     return ui::TextEditCommand::SELECT_ALL;
   return ui::TextEditCommand::INVALID_COMMAND;
@@ -260,6 +262,7 @@ ui::TextEditCommand GetTextEditCommandForMenuAction(SEL action) {
 - (void)cut:(id)sender;
 - (void)copy:(id)sender;
 - (void)paste:(id)sender;
+- (void)pasteAndMatchStyle:(id)sender;
 - (void)selectAll:(id)sender;
 
 @end
@@ -660,6 +663,13 @@ ui::TextEditCommand GetTextEditCommandForMenuAction(SEL action) {
           eventFlags:ui::EF_CONTROL_DOWN];
 }
 
+- (void)pasteAndMatchStyle:(id)sender {
+  [self handleAction:ui::TextEditCommand::PASTE
+             keyCode:ui::VKEY_V
+             domCode:ui::DomCode::US_V
+          eventFlags:ui::EF_CONTROL_DOWN | ui::EF_SHIFT_DOWN];
+}
+
 - (void)selectAll:(id)sender {
   [self handleAction:ui::TextEditCommand::SELECT_ALL
              keyCode:ui::VKEY_A