[iOS] Add experimental new keyboard accessory view.

ios/chrome/browser/ui/toolbar/web_toolbar_controller.mm

Index: ios/chrome/browser/ui/toolbar/web_toolbar_controller.mm
diff --git a/ios/chrome/browser/ui/toolbar/web_toolbar_controller.mm b/ios/chrome/browser/ui/toolbar/web_toolbar_controller.mm
index ba6ae8de275f17080ee428288b0bbbeba5c91462..ec752cf917bb840bca496a803276e38ab89ab92c 100644
--- a/ios/chrome/browser/ui/toolbar/web_toolbar_controller.mm
+++ b/ios/chrome/browser/ui/toolbar/web_toolbar_controller.mm
@@ -29,6 +29,7 @@
 #include "ios/chrome/browser/autocomplete/autocomplete_scheme_classifier_impl.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
 #include "ios/chrome/browser/chrome_url_constants.h"
+#include "ios/chrome/browser/experimental_flags.h"
 #include "ios/chrome/browser/reading_list/reading_list_model_factory.h"
 #include "ios/chrome/browser/search_engines/template_url_service_factory.h"
 #import "ios/chrome/browser/tabs/tab.h"
@@ -1481,6 +1482,12 @@ - (void)keyboardAccessoryVoiceSearchTouchUpInside {
   }
 }
 
+- (void)keyboardAccessoryCameraSearchTouchUpInside {
+  GenericChromeCommand* command =
+      [[GenericChromeCommand alloc] initWithTag:IDC_SHOW_QR_SCANNER];
+  [_keyBoardAccessoryView chromeExecuteCommand:command];
+}
+
 - (void)keyPressed:(NSString*)title {
   NSString* text = [self updateTextForDotCom:title];
   [_omniBox insertTextWhileEditing:text];
@@ -1843,8 +1850,17 @@ - (void)loadURLForQuery:(NSString*)query {
 
 - (UIView*)keyboardAccessoryView {
   if (!_keyBoardAccessoryView) {
-    NSArray<NSString*>* buttonTitles =
-        [NSArray arrayWithObjects:@":", @".", @"-", @"/", kDotComTLD, nil];
+    NSArray<NSString*>* buttonTitles;
+    if (experimental_flags::IsKeyboardAccessoryViewWithCameraSearchEnabled()) {
+      // The '.' shortcut is left out because the new keyboard accessory view
+      // has less free space for the shortcut buttons, and the '.' is already
+      // present in the standard iOS keyboard.
+      buttonTitles =
+          [NSArray arrayWithObjects:@":", @"-", @"/", kDotComTLD, nil];
+    } else {
+      buttonTitles =
+          [NSArray arrayWithObjects:@":", @".", @"-", @"/", kDotComTLD, nil];
+    }
     _keyBoardAccessoryView =
         [[KeyboardAccessoryView alloc] initWithButtons:buttonTitles
                                               delegate:self];