Support cmd-left/right for history.

chrome/browser/global_keyboard_shortcuts_mac.mm

Index: chrome/browser/global_keyboard_shortcuts_mac.mm
diff --git a/chrome/browser/global_keyboard_shortcuts_mac.mm b/chrome/browser/global_keyboard_shortcuts_mac.mm
index 63982ef1c610bc68d584d2385b9cfbda54abcf7c..d74f9354bce9cee311e87e3224583ef8bd13ecb1 100644
--- a/chrome/browser/global_keyboard_shortcuts_mac.mm
+++ b/chrome/browser/global_keyboard_shortcuts_mac.mm
@@ -9,7 +9,8 @@
 #include "base/basictypes.h"
 #include "chrome/app/chrome_dll_resource.h"
 
-const KeyboardShortcutData* GetKeyboardShortCutTable(size_t* num_entries) {
+const KeyboardShortcutData* GetWindowKeyboardShortcutTable
+    (size_t* num_entries) {
   static const KeyboardShortcutData keyboard_shortcuts[] = {
     {true,  true,  false, kVK_ANSI_RightBracket, IDC_SELECT_NEXT_TAB},
     {false, false, true,  kVK_PageDown,      IDC_SELECT_NEXT_TAB},
@@ -27,11 +28,6 @@ const KeyboardShortcutData* GetKeyboardShortCutTable(size_t* num_entries) {
     {true, false,  false, kVK_ANSI_7,        IDC_SELECT_TAB_6},
     {true, false,  false, kVK_ANSI_8,        IDC_SELECT_TAB_7},
     {true, false,  false, kVK_ANSI_9,        IDC_SELECT_LAST_TAB},
-    // TODO(pinkerton): These can't live here yet, they need to be plumbed
-    // through the renderer first so it can override if in a text field.
-    // http://crbug.com/12557
-    // {true, false, false, kVK_LeftArrow,      IDC_BACK},
-    // {true, false, false, kVK_RightArrow,     IDC_FORWARD},
   };
 
   *num_entries = arraysize(keyboard_shortcuts);
@@ -39,8 +35,21 @@ const KeyboardShortcutData* GetKeyboardShortCutTable(size_t* num_entries) {
   return keyboard_shortcuts;
 }
 
-int CommandForKeyboardShortcut(bool command_key, bool shift_key, bool cntrl_key,
-    int vkey_code) {
+const KeyboardShortcutData* GetBrowserKeyboardShortcutTable
+    (size_t* num_entries) {
+  static const KeyboardShortcutData keyboard_shortcuts[] = {
+    {true, false, false, kVK_LeftArrow,      IDC_BACK},
+    {true, false, false, kVK_RightArrow,     IDC_FORWARD},
+  };
+
+  *num_entries = arraysize(keyboard_shortcuts);
+
+  return keyboard_shortcuts;
+}
+
+static int CommandForKeyboardShortcut(
+    const KeyboardShortcutData* (*get_keyboard_shortcut_table)(size_t*),
+    bool command_key, bool shift_key, bool cntrl_key, int vkey_code) {
 
   // Scan through keycodes and see if it corresponds to one of the global
   // shortcuts on file.
@@ -48,7 +57,7 @@ int CommandForKeyboardShortcut(bool command_key, bool shift_key, bool cntrl_key,
   // TODO(jeremy): Change this into a hash table once we get enough
   // entries in the array to make a difference.
   size_t num_shortcuts = 0;
-  const KeyboardShortcutData *it = GetKeyboardShortCutTable(&num_shortcuts);
+  const KeyboardShortcutData *it = get_keyboard_shortcut_table(&num_shortcuts);
   for (size_t i = 0; i < num_shortcuts; ++i, ++it) {
     if (it->command_key == command_key &&
         it->shift_key == shift_key &&
@@ -60,3 +69,17 @@ int CommandForKeyboardShortcut(bool command_key, bool shift_key, bool cntrl_key,
 
   return -1;
 }
+
+int CommandForWindowKeyboardShortcut(
+    bool command_key, bool shift_key, bool cntrl_key, int vkey_code) {
+  return CommandForKeyboardShortcut(GetWindowKeyboardShortcutTable,
+                                    command_key, shift_key,
+                                    cntrl_key, vkey_code);
+}
+
+int CommandForBrowserKeyboardShortcut(
+    bool command_key, bool shift_key, bool cntrl_key, int vkey_code) {
+  return CommandForKeyboardShortcut(GetBrowserKeyboardShortcutTable,
+                                    command_key, shift_key,
+                                    cntrl_key, vkey_code);
+}