[Mac] Add menu to reload button available when debugging.

chrome/browser/ui/cocoa/toolbar/reload_button.mm

Index: chrome/browser/ui/cocoa/toolbar/reload_button.mm
diff --git a/chrome/browser/ui/cocoa/toolbar/reload_button.mm b/chrome/browser/ui/cocoa/toolbar/reload_button.mm
index 1ac51bccdcf5ffb4a625dc4e2e20b6c2ddf7fd8d..0231579ce9f1b9105096e456ac332cda4d8f45aa 100644
--- a/chrome/browser/ui/cocoa/toolbar/reload_button.mm
+++ b/chrome/browser/ui/cocoa/toolbar/reload_button.mm
@@ -5,28 +5,46 @@
 #import "chrome/browser/ui/cocoa/toolbar/reload_button.h"
 
 #include "chrome/app/chrome_command_ids.h"
+#import "chrome/browser/ui/cocoa/accelerators_cocoa.h"
 #import "chrome/browser/ui/cocoa/view_id_util.h"
+#include "chrome/browser/command_updater.h"
 #include "chrome/grit/generated_resources.h"
 #include "grit/theme_resources.h"
+#include "ui/base/accelerators/platform_accelerator_cocoa.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/l10n/l10n_util_mac.h"
+#import "ui/events/event_utils.h"
 
 namespace {
 
 // Constant matches Windows.
 NSTimeInterval kPendingReloadTimeout = 1.35;
 
+// Contents of the Reload drop-down menu.
+const int kReloadMenuItems[]  = {
+  IDS_RELOAD_MENU_NORMAL_RELOAD_ITEM,
+  IDS_RELOAD_MENU_HARD_RELOAD_ITEM,
+  IDS_RELOAD_MENU_EMPTY_AND_HARD_RELOAD_ITEM,
+};
+// Note: must have the same size as |kReloadMenuItems|.
+const int kReloadMenuCommands[]  = {
+  IDC_RELOAD,
+  IDC_RELOAD_IGNORING_CACHE,
+  IDC_RELOAD_CLEARING_CACHE,
+};
+
 }  // namespace
 
 @interface ReloadButton ()
 - (void)invalidatePendingReloadTimer;
 - (void)forceReloadState:(NSTimer *)timer;
+- (void)populateMenu;
 @end
 
 @implementation ReloadButton
 
 + (Class)cellClass {
-  return [ImageButtonCell class];
+  return [ClickHoldButtonCell class];
 }
 
 - (id)initWithFrame:(NSRect)frameRect {
@@ -47,6 +65,12 @@ NSTimeInterval kPendingReloadTimeout = 1.35;
   // Don't allow multi-clicks, because the user probably wouldn't ever
   // want to stop+reload or reload+stop.
   [self setIgnoresMultiClick:YES];
+
+  [self setOpenMenuOnRightClick:YES];
+  [self setOpenMenuOnClick:NO];
+
+  menu_.reset([[NSMenu alloc] initWithTitle:@""]);
+  [self populateMenu];
 }
 
 - (void)invalidatePendingReloadTimer {
@@ -138,6 +162,14 @@ NSTimeInterval kPendingReloadTimeout = 1.35;
   [self setEnabled:pendingReloadTimer_ == nil];
 }
 
+- (void)setMenuEnabled:(BOOL)enabled {
+  [self setAttachedMenu:(enabled ? menu_ : nil)];
+}
+
+- (void)setCommandUpdater:(CommandUpdater*)commandUpdater {
+  commandUpdater_ = commandUpdater;
+}
+
 - (void)forceReloadState:(NSTimer *)timer {
   DCHECK_EQ(timer, pendingReloadTimer_);
   [self setIsLoading:NO force:YES];
@@ -176,6 +208,52 @@ NSTimeInterval kPendingReloadTimeout = 1.35;
   [pendingReloadTimer_ fire];
 }
 
+- (void)populateMenu {
+  [menu_ setAutoenablesItems:NO];
+  // 0-th item must be blank. (This is because we use a pulldown list, for which
+  // Cocoa uses the 0-th item as "title" in the button.)
+  [menu_ addItemWithTitle:@""
+                   action:nil
+            keyEquivalent:@""];
+  AcceleratorsCocoa* keymap = AcceleratorsCocoa::GetInstance();
+  for (size_t i = 0; i < arraysize(kReloadMenuItems); ++i) {
+    NSString* title = l10n_util::GetNSStringWithFixup(kReloadMenuItems[i]);
+    base::scoped_nsobject<NSMenuItem> item(
+        [[NSMenuItem alloc] initWithTitle:title
+                                   action:@selector(executeMenuItem:)
+                            keyEquivalent:@""]);
+
+    const ui::Accelerator* accelerator =
+        keymap->GetAcceleratorForCommand(kReloadMenuCommands[i]);
+    if (accelerator) {
+      const ui::PlatformAcceleratorCocoa* platform =
+          static_cast<const ui::PlatformAcceleratorCocoa*>(
+                accelerator->platform_accelerator());
+      if (platform) {
+        [item setKeyEquivalent:platform->characters()];
+        [item setKeyEquivalentModifierMask:platform->modifier_mask()];
+      }
+    }
+
+    [item setTag:kReloadMenuCommands[i]];
+    [item setTarget:self];
+    [item setEnabled:YES];
+
+    [menu_ addItem:item];
+  }
+}
+
+// Action for menu items.
+- (void)executeMenuItem:(id)sender {
+  if (!commandUpdater_)
+    return;
+  DCHECK([sender isKindOfClass:[NSMenuItem class]]);
+  int command = [sender tag];
+  int event_flags = ui::EventFlagsFromNative([NSApp currentEvent]);
+  commandUpdater_->ExecuteCommandWithDisposition(
+      command, ui::DispositionFromEventFlags(event_flags));
+}
+
 @end  // ReloadButton
 
 @implementation ReloadButton (Testing)