Send screenshots back to the client for debugging

chrome/browser/automation/testing_automation_provider.cc

Index: chrome/browser/automation/testing_automation_provider.cc
diff --git a/chrome/browser/automation/testing_automation_provider.cc b/chrome/browser/automation/testing_automation_provider.cc
index 81c0294caf0e1cdef098d51834cff5f880624881..0664542b930e689854a0b5d1196b06fa579e424a 100644
--- a/chrome/browser/automation/testing_automation_provider.cc
+++ b/chrome/browser/automation/testing_automation_provider.cc
@@ -9,6 +9,7 @@
 #include <vector>
 
 #include "base/command_line.h"
+#include "base/file_path.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/json/string_escape.h"
@@ -2052,6 +2053,8 @@ void TestingAutomationProvider::SendJSONRequest(int handle,
       &TestingAutomationProvider::GetTabURLJSON;
   handler_map["GetTabTitle"] =
       &TestingAutomationProvider::GetTabTitleJSON;
+  handler_map["CaptureEntirePage"] =
+      &TestingAutomationProvider::CaptureEntirePageJSON;
   handler_map["GetCookies"] =
       &TestingAutomationProvider::GetCookiesJSON;
   handler_map["DeleteCookie"] =
@@ -4956,6 +4959,37 @@ void TestingAutomationProvider::GetTabTitleJSON(
   reply.SendSuccess(&dict);
 }
 
+void TestingAutomationProvider::CaptureEntirePageJSON(
+    DictionaryValue* args,
+    IPC::Message* reply_message) {
+  TabContents* tab_contents;
+  std::string error;
+
+  if (!GetTabFromJSONArgs(args, &tab_contents, &error)) {
+    AutomationJSONReply(this, reply_message).SendError(error);
+    return;
+  }
+
+  FilePath::StringType path_str;
+  if (!args->GetString("path", &path_str)) {
+    AutomationJSONReply(this, reply_message)
+        .SendError("'path' missing or invalid");
+    return;
+  }
+
+  RenderViewHost* render_view = tab_contents->render_view_host();
+  if (render_view) {
+    FilePath path(path_str);
+    // This will delete itself when finished.
+    PageSnapshotTaker* snapshot_taker = new PageSnapshotTaker(
+        this, reply_message, render_view, path);
+    snapshot_taker->Start();
+  } else {
+    AutomationJSONReply(this, reply_message)
+        .SendError("Tab has no associated RenderViewHost");
+  }
+}
+
 void TestingAutomationProvider::GetCookiesJSON(
     DictionaryValue* args, IPC::Message* reply_message) {
   automation_util::GetCookiesJSON(this, args, reply_message);