4 files changed, 42 insertions, 0 deletions
diff --git a/chrome/browser/automation/automation_provider.cc b/chrome/browser/automation/automation_provider.cc
index f7fef6b..38b732e 100644
--- a/chrome/browser/automation/automation_provider.cc
+++ b/chrome/browser/automation/automation_provider.cc
@@ -50,8 +50,10 @@
 #include "chrome/common/json_value_serializer.h"
 #include "chrome/common/notification_service.h"
 #include "chrome/common/platform_util.h"
+#include "chrome/common/pref_names.h"
 #include "chrome/common/pref_service.h"
 #include "chrome/test/automation/automation_messages.h"
+#include "chrome/test/automation/tab_proxy.h"
 #include "net/proxy/proxy_service.h"
 #include "net/proxy/proxy_config_service_fixed.h"
 #include "net/url_request/url_request_context.h"
@@ -429,6 +431,7 @@ void AutomationProvider::OnMessageReceived(const IPC::Message& message) {
 #if defined(OS_WIN)
     IPC_MESSAGE_HANDLER(AutomationMsg_ConnectExternalTab, ConnectExternalTab)
 #endif
+    IPC_MESSAGE_HANDLER(AutomationMsg_SetPageFontSize, OnSetPageFontSize)
   IPC_END_MESSAGE_MAP()
 }
 
@@ -1966,6 +1969,30 @@ void AutomationProvider::StopAsync(int tab_handle) {
   view->Stop();
 }
 
+void AutomationProvider::OnSetPageFontSize(int tab_handle,
+                                           int font_size) {
+  AutomationPageFontSize automation_font_size =
+      static_cast<AutomationPageFontSize>(font_size);
+
+  if (automation_font_size < SMALLEST_FONT ||
+      automation_font_size > LARGEST_FONT) {
+      DLOG(ERROR) << "Invalid font size specified : "
+                  << font_size;
+      return;
+  }
+
+  if (tab_tracker_->ContainsHandle(tab_handle)) {
+    NavigationController* tab = tab_tracker_->GetResource(tab_handle);
+    DCHECK(tab != NULL);
+    if (tab && tab->tab_contents()) {
+      DCHECK(tab->tab_contents()->profile() != NULL);
+      tab->tab_contents()->profile()->GetPrefs()->SetInteger(
+          prefs::kWebKitDefaultFontSize, font_size);
+    }
+  }
+}
+
+
 void AutomationProvider::WaitForBrowserWindowCountToBecome(
     int target_count, IPC::Message* reply_message) {
   if (static_cast<int>(BrowserList::size()) == target_count) {
diff --git a/chrome/browser/automation/automation_provider.h b/chrome/browser/automation/automation_provider.h
index 6b72395..ef1f228 100644
--- a/chrome/browser/automation/automation_provider.h
+++ b/chrome/browser/automation/automation_provider.h
@@ -299,6 +299,8 @@ class AutomationProvider : public base::RefCounted<AutomationProvider>,
                           gfx::NativeWindow* tab_window,
                           int* tab_handle);
 
+  void OnSetPageFontSize(int tab_handle, int font_size);
+
   void NavigateInExternalTab(
       int handle, const GURL& url,
       AutomationMsg_NavigationResponseValues* status);
diff --git a/chrome/test/automation/automation_messages_internal.h b/chrome/test/automation/automation_messages_internal.h
index 5836ec6..c9d04dd 100644
--- a/chrome/test/automation/automation_messages_internal.h
+++ b/chrome/test/automation/automation_messages_internal.h
@@ -1109,4 +1109,8 @@ IPC_BEGIN_MESSAGES(Automation)
   //   bool - true if query is successful
   IPC_SYNC_MESSAGE_ROUTED1_2(AutomationMsg_IsWindowMaximized, int, bool, bool)
 
+  IPC_MESSAGE_ROUTED2(AutomationMsg_SetPageFontSize,
+                      int /* tab_handle */,
+                      int /* The font size */)
+
 IPC_END_MESSAGES(Automation)
diff --git a/chrome/test/automation/tab_proxy.h b/chrome/test/automation/tab_proxy.h
index 7209ada..b990d2e 100644
--- a/chrome/test/automation/tab_proxy.h
+++ b/chrome/test/automation/tab_proxy.h
@@ -29,6 +29,15 @@ class Message;
 
 enum FindInPageDirection { BACK = 0, FWD = 1 };
 enum FindInPageCase { IGNORE_CASE = 0, CASE_SENSITIVE = 1 };
+// Specifies the font size on a page which is requested by an automation
+// client.
+enum AutomationPageFontSize {
+  SMALLEST_FONT = 8,
+  SMALL_FONT = 12,
+  MEDIUM_FONT = 16,
+  LARGE_FONT = 24,
+  LARGEST_FONT = 36
+};
 
 class TabProxy : public AutomationResourceProxy {
  public: