Revert of Revive experiment to isolate shell operations.

chrome/common/chrome_utility_messages.h

Index: chrome/common/chrome_utility_messages.h
diff --git a/chrome/common/chrome_utility_messages.h b/chrome/common/chrome_utility_messages.h
index 8eaaede78b53c8a8d0cf86195af0732836824d18..99af34bc5d0bdded6fd179289f3f82d93e354495 100644
--- a/chrome/common/chrome_utility_messages.h
+++ b/chrome/common/chrome_utility_messages.h
@@ -4,10 +4,16 @@
 
 // Multiply-included message file, so no include guard.
 
+#if defined(OS_WIN)
+#include <Windows.h>
+#endif  // defined(OS_WIN)
+
 #include <string>
+#include <tuple>
 #include <vector>
 
 #include "base/files/file_path.h"
+#include "base/strings/string16.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "ipc/ipc_message_macros.h"
@@ -24,6 +30,13 @@
 // Singly-included section for typedefs.
 #ifndef CHROME_COMMON_CHROME_UTILITY_MESSAGES_H_
 #define CHROME_COMMON_CHROME_UTILITY_MESSAGES_H_
+
+#if defined(OS_WIN)
+// A vector of filters, each being a tuple containing a display string (i.e.
+// "Text Files") and a filter pattern (i.e. "*.txt").
+typedef std::vector<std::tuple<base::string16, base::string16>>
+    GetOpenFileNameFilter;
+#endif  // OS_WIN
 
 #endif  // CHROME_COMMON_CHROME_UTILITY_MESSAGES_H_
 
@@ -111,6 +124,18 @@
 IPC_STRUCT_TRAITS_END()
 #endif  // FULL_SAFE_BROWSING
 
+#if defined(OS_WIN)
+IPC_STRUCT_BEGIN(ChromeUtilityMsg_GetSaveFileName_Params)
+  IPC_STRUCT_MEMBER(HWND, owner)
+  IPC_STRUCT_MEMBER(DWORD, flags)
+  IPC_STRUCT_MEMBER(GetOpenFileNameFilter, filters)
+  IPC_STRUCT_MEMBER(int, one_based_filter_index)
+  IPC_STRUCT_MEMBER(base::FilePath, suggested_filename)
+  IPC_STRUCT_MEMBER(base::FilePath, initial_directory)
+  IPC_STRUCT_MEMBER(base::string16, default_extension)
+IPC_STRUCT_END()
+#endif  // OS_WIN
+
 //------------------------------------------------------------------------------
 // Utility process messages:
 // These are messages from the browser to the utility process.
@@ -155,6 +180,25 @@
 #endif  // defined(OS_MACOSX)
 #endif  // defined(FULL_SAFE_BROWSING)
 
+#if defined(OS_WIN)
+// Instructs the utility process to invoke GetOpenFileName. |owner| is the
+// parent of the modal dialog, |flags| are OFN_* flags. |filter| constrains the
+// user's file choices. |initial_directory| and |filename| select the directory
+// to be displayed and the file to be initially selected.
+//
+// Either ChromeUtilityHostMsg_GetOpenFileName_Failed or
+// ChromeUtilityHostMsg_GetOpenFileName_Result will be returned when the
+// operation completes whether due to error or user action.
+IPC_MESSAGE_CONTROL5(ChromeUtilityMsg_GetOpenFileName,
+                     HWND /* owner */,
+                     DWORD /* flags */,
+                     GetOpenFileNameFilter /* filter */,
+                     base::FilePath /* initial_directory */,
+                     base::FilePath /* filename */)
+IPC_MESSAGE_CONTROL1(ChromeUtilityMsg_GetSaveFileName,
+                     ChromeUtilityMsg_GetSaveFileName_Params /* params */)
+#endif  // defined(OS_WIN)
+
 //------------------------------------------------------------------------------
 // Utility process host messages:
 // These are messages from the utility process to the browser.
@@ -189,3 +233,14 @@
     safe_browsing::zip_analyzer::Results)
 #endif  // defined(OS_MACOSX)
 #endif  // defined(FULL_SAFE_BROWSING)
+
+#if defined(OS_WIN)
+IPC_MESSAGE_CONTROL0(ChromeUtilityHostMsg_GetOpenFileName_Failed)
+IPC_MESSAGE_CONTROL2(ChromeUtilityHostMsg_GetOpenFileName_Result,
+                     base::FilePath /* directory */,
+                     std::vector<base::FilePath> /* filenames */)
+IPC_MESSAGE_CONTROL0(ChromeUtilityHostMsg_GetSaveFileName_Failed)
+IPC_MESSAGE_CONTROL2(ChromeUtilityHostMsg_GetSaveFileName_Result,
+                     base::FilePath /* path */,
+                     int /* one_based_filter_index  */)
+#endif  // defined(OS_WIN)